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The biggest rats in the world


A rat is a mammal that can survive under any conditions. These rodents cause human life a lot of trouble. But some people like them and start them up as pets. Rats, like humans, laugh, and when experiencing severe stress, they can die. Today we will talk about the largest giant rats.

The largest rat in the world

Such a rodent is the woolly Bosawi found by scientists in New Guinea. Its dimensions can reach 1 m, and weight up to 1.5 kilograms. In another way they are called giant marsupial rats.

The woolly Bosawi is similar in size to a small dog. In relation to the person they are not timid and friendly. This is due to the fact that they were found far from civilization, and the animals did not contact people. They can even be picked up and stroked without fear, the rodent will not bite.

Turkestan rat

This is a wild rodent that lives in forests and mountains. Very common in Central Asia. The Turkestan rat likes a cool, moisture-saturated climate. In length, the species can grow up to 25 cm - the body, 21 cm - the tail. The diet of rodents includes nuts, fruits, herbs. The hard shell serves rats as a sharpener for teeth.

Gray big rat (pasyuk)

The appearance of these rodents prevails in Russia. They like to settle along the banks of rivers, lakes, ponds, digging their holes in loose soil. Also, they can often be found in human habitats, where rodents can profit from something edible. The length of the apiary grows to 40 cm, the tail is usually two times shorter. These rats are predators. They can take both plant and animal food.


This species of huge rats can grow up to 41 cm. An active life is spent at night. With such dimensions, they are considered large marsupial rodents. Looks like a small copy of a kangaroo, even moving around is done by jumping on its hind legs. Potor eats plants and small insects.

Reasonable, unreasonable fears

More recently, some 3 decades, articles appeared in Moscow newspapers about giant rats that were met in the Moscow metro. The articles claimed that rats appeared on the surface where they pounced on passers-by. In size, these rats were comparable with dogs, while they had red eyes, a plaque on the teeth of a yellow hue and a wolf's grin. In other words, terrible monsters and quite aggressive.

With the advent of the Internet, videos about rodents with a terrifying look increasingly began to appear on social networks. The Chinese presented a photo of the rat, which was held by the tail. It is believed that it was the largest mammal of this species, which weighed several kilograms.

Thanks to the Internet, many people began to have phobias in relation to this type of rodent, both substantiated and unjustified. Who wants to meet on their way a giant rat, and even hungry. In fact, everything is not so simple and ambiguous, since the species of rats are different, and there are also animals similar to rats.

Want to know everything

Plots about giant mutant rats in popularity surely occupy first places among urban horror stories, and various works of art actively exploit such images. Indeed, the nerves can tickle the reader only with the thought that somewhere in the sewer huge rats with red eyes and yellow teeth are wandering, eternally hungry, cunning, able to get out of their sewer retreat sooner or later and go in search of a victim.

And when the same person finds out that the largest rat in the world can be compared with a dog in size, he becomes even stronger in his fears.

Indeed, the largest rat known to science may well pass for a monster that has descended from the pages of a third-rate horror story. But ... only outwardly. The fact is that such giants of the rat world do not pose a real danger to humans, because their character is quite peaceful.

To what sizes rodents grow

As a rule, basically a person in his life meets 2 varieties of rats - gray and black. Moreover, these representatives of the genus of mice are found almost everywhere: in sewers, in dungeons, in cellars, in cellars, in abandoned buildings, in trash, etc.

With the onset of cold weather, as well as in conditions of lack of food, rats begin to move closer to humans, appearing in farm buildings for various purposes. Often rats attack even humans.

Rodents of these species grow up to 25 cm in length, while the length of the tail can be the same. Even the natural dimensions of this animal are impressive, so a number of questions arise. In fact, these rodents never grow to the size of cats, and especially dogs. Adult individuals weigh no more than half a kilogram, and a similar weight is characteristic of individual individuals. The average size of a rat is no more than 350 grams. Laboratory rats also do not differ in gigantic size.

Deriving special types of rats of huge sizes simply does not make sense, since they are not eaten by humans. The artificially created white rat breed weighs no more than 500 grams and is not distinguished by an elongated body. If the rat has somewhat large, non-standard sizes, then, most likely, the rat has free access to food and it constantly transmits.

It's important to know! Rats, like cockroaches, can live without problems in conditions of increased radiation, when other living things do not survive. Adapting to new conditions, rats begin to mutate. According to observations made in the exclusion zone, huge plants, giant vegetables and fruits, cockroaches and rats may appear. Unfortunately, no special studies were carried out, so it is not known to what extent rodents in the exclusion zone can grow, but it is assumed that an increase in size is possible.

A black rat is capable of growing up to 22 cm in length, weighing no more than 300 grams. The white rat is distinguished by several large dimensions - its weight is about 500 grams, and its length is about 30 cm.

In countries with a warmer climate, larger varieties are found that differ in that they do not harm a person, while bringing benefits.

Which rat is officially considered the largest in the world?

The photo below shows the largest rat in the world:

It is called the Bosavi woolly rat, although the name is temporary, and is not currently approved as a scientific one.

The animal in the photo (the tongue will not turn it into a beast) has a body length from the tip of the nose to the base of the tail 82 cm and weighs about 1.5 kg. Outwardly, it is a typical rat, even the color of the fur and the “expression” of its muzzle is the same as that of its relatives from the city cellars. Nevertheless, in its dimensions and weight, the Bosavi woolly rat is at least three times the size of its largest city counterparts.

Bosawi rats are completely not aggressive towards humans and are not afraid of him: a wild animal can be stroked, a rat will not run away and will not try to bite. At least no zoologist was injured during the inspection, weighing and measurement of these rodents in their natural habitat. Such a calm attitude to humans is connected with the remoteness of the habitat of a woolly rat: so far, representatives of the species have been found only in a crater completely cut off from civilization, long extinct and overgrown with tropical forest, Bosavi volcano in Papua New Guinea. Not meeting people here, rats do not know that they need to be afraid.

Today, Bosavi rats are not known to be found in any other places in the world, and most likely, apart from the deserted crater of the volcano in Papua New Guinea, they are not found anywhere else in the world. To meet such an animal in a garbage dump somewhere in Russia or in Europe will definitely not work. Here you can catch the eye only gray or black rats eaten off on the garbage - indispensable companions of our civilization.

1. Black rat

One of the most common rat species on the planet. It differs from others in that it does not live in holes, but in nests in trees, ships, mills. She is thermophilic. It was the black rat that Jack London mentioned, describing the ship's life of that time. It feeds mainly on plant foods. Her body reaches 23 cm, the tail - up to 27 cm.

2. The gray rat

Pasyuk are widespread everywhere on all continents of the world, except for northern latitudes and Antarctica. It is the largest representative of the mouse family living on the territory of the Russian Federation. Its dimensions are up to 25 cm.

It is the terrible gray rat - the unchanging character of horror films. Mutant pasyuki teeming in the subway, a sewer full of aggressive rodents are the directors' favorite scenes that tickled the nerves of the audience for many years.

Also with Pasyuk is a large number of myths and legends. On the Internet you can find stories about specimens weighing 18 kg, allegedly encountered during expeditions to Chernobyl. Gigantic sizes are explained by the effect of radiation.

Or the "true" stories of the Moscow metro drivers, meeting in the tunnels of hungry monsters of incredible size. Moreover, they allegedly feed on insulation from high voltage cables.

Moscow with its underground communications, secret catacombs, old Kremlin towers and unchanging monster rats teeming there continue to attract the attention of ordinary people with its incredibility and this news is all overgrown with new details.

In fairness, we note that the fantasies of the authors of these myths are not supported by anything other than the desire to earn popularity and draw attention to their publications.

3. Standard

According to scientists, it is from this subspecies that all other decorative species of rats originated. Due to the ability to care for themselves, these rodents are most often tamed by humans. They are almost omnivorous: vegetables, fruits, grains, meat - all these animals are suitable for food. Adults reach 30 cm. Tail - up to 20 cm.

4. Musk Kangaroo

The musk kangaroo, also called the chain-legged, got its name due to the smell of musk emanating from it, and the ability to climb trees. Outwardly, he is almost indistinguishable from a gray rat, but prefers to live near water.

The chain-legged cubs are several months after birth in a special bag with the female. Individual specimens can reach a length of 35 cm.

There are even signs by which one can understand why these parasites appear in the house.

6. Bamboo

One of the largest species of burrowing rodents. It lives in Southeast Asia. Adults reach forty-eight centimeters in length. They live in burrows underground. They feed on bamboo roots, shoots, and various plants.

On the network you can find information that in China they caught a huge bamboo giant rodent, whose weight was eleven kilograms! Caught by a resident of Fuzhou, the rat had huge three-centimeter fangs, and the tail length was thirty centimeters. It is curious that this fact was not recorded either by the Guinness Book of Records, or other similar authoritative publications.

7. Red kangaroo

This small mammal belongs to the rat kangaroo family. It is called so thanks to the reddish-brown hue of the color. Marsupials are found in Australia and are a rare species. In size, a large rat rodent kangaroo resembles a rabbit, in everything else the animal is not much different from a kangaroo. The length of his body is up to 55 cm.

Being the only species of its kind, it is the largest of all kangaroo rats. Their length can be up to half a meter, and the tail - forty centimeters. It feeds on plant foods.

8. Large reed

This type of rat is one of the largest. Their homeland is Africa. Animals are herbivores, eat sugarcane, grain, plants, thereby causing irreparable harm to agriculture.

To fight them, people often use pythons and mongooses. And often rodents become prey of the people themselves. Their meat is very popular in this area. African rodents can grow up to half a meter, and their weight reaches up to nine kilograms.

9. Gambian marsupial

It is also called a hamster rat. The name of this subspecies comes from the ability of the animal to carry food in cheekbags, like a hamster. It lives on the African continent. Giant rodents, the length of individual individuals of which can reach up to ninety centimeters, have a body weight of no more than one and a half kilograms.

Gambian rats tend to become pets. They are also easy to train, which makes possible their use by special services in the search for explosives.

10. Woolly Bosawi Rat

The largest rat in the world. It was discovered in 2009 by researchers from England on the island of Papua New Guinea in the crater of the inactive volcano Bosawi. From here came its second name - the Papuan rat. The length of the mammal exceeds ninety centimeters, and weighs approximately one and a half kilograms.

Outwardly, it is no different from its counterparts, except perhaps for its size. It is noteworthy that the animals turned out to be absolutely peaceful and were not afraid of people.

You can learn about effective poisons from this article.

Reed rat

This species lives in Africa, in its central, eastern and southern parts. They settle in wetlands, in floodplains, where there is a lot of reed. Hence the name of the species of rodents. In length, such animals can grow from 40 to 60 cm, plus a tail up to 25 cm. Weight can reach almost 9 kg - really one of the largest rats. Outwardly, they look like nutria, with which they are often confused. Great swimmers. The pond serves as their home and refuge.

Gambian marsupial (hamster)

This species can be called a rat only in appearance. The rodent has cheeks in which, like a hamster, can fold food. The word "marsupial" in the name of the species is misleading. They have no bag like a kangaroo. These rodents grow up to 90 cm with their tail and reach a weight of about 1.5 kg.

A large rat eats plants, vegetables, fruits, snails, termites. Prefers to live in thickets of forests, going hunting at night. They live 2-3 years, but at home they can live up to 4 years. This animal is raised on farms "for meat". And also use to detect anti-personnel mines.

Big domestic rats

Often you can meet, as pets, some species of rats. With various colors, sizes, habits. For the maintenance of rodents does not require large expenditures, they are unpretentious. As a feed, both a special from a pet store and human food are suitable. Unfortunately, they are not long-livers, they live 2-4 years. Therefore, too impressionable people are not recommended to have such a pet. Which domestic rats are the largest?


Nutria is a herbivorous, semi-aquatic rodent inhabiting burrows. Like a giant rat, a typical nutria grows somewhere 71-106 cm in length. Adults weigh 16 kilograms. Throughout the 1800s, the creature was expelled from most of its natural habitat.

Argentina began breeding nutria in order to obtain fur. By the beginning of the 20th century, the practice of breeding spread to North America, Eurasia, although the fur itself did not become popular among traders.

Starting from the 1940s, nutria became where it spread (escaped from local fur farms and multiplied), including rural England, Louisiana, Maryland. Nutria-based products are sold in the form of dog food.

According to National Geographic, adult nutria do not grow longer than 60 cm.

Breed "standard"

They are the largest and most common among domestic rodents. In length, the pet can grow up to 30 cm and reach a weight of 300−500 gr. In relation to the person are friendly, do not bite.

They get used to it quickly and can sit on their hands or shoulder for hours. At least once a week, their cage needs to be cleaned. There should be fresh water in the drinker, and the presence of cereals is mandatory in the feeder. Cases of their friendship with other pets are not uncommon. Live from 2 to 4 years.

Large brown rats

Also included in the number of large domestic rodents. They grow in length up to 20 cm, and weigh 100-150 gr. They are also omnivorous and unpretentious. They love to be taken for a walk. There is a slight inconvenience in this, because not all people have a positive attitude towards rats, albeit domestic ones. Another disadvantage is that this species lives only 2 years, sometimes up to three years.

Rats "Dumbo"

They differ from other species in the structure and arrangement of the ears. In the Dambo breed, the ears are round and wide, protruding, located lower than in other species. In length reach 18−20 cm, can weigh from 250 to 500 grams. In the form of a body, animals look like a pear. Females of this species are slightly smaller. Rodents are very affectionate, can remember their nickname. Eat grains, herbs, vegetables. Also, the Dambo breed is fed with boiled and raw chicken, fish, cottage cheese. Rodents live 2-3 years, but with proper care they can live from 4 to 5 years.

Wild big rats that live in Russia

In Russia, rats can be found almost everywhere. They live in natural conditions, and also often settle near a person’s dwelling. Among them are species such as: black and pasuk (gray).

Pasyuk often settles in sewers, basements, warehouses, and in animal sheds. They grow to 25 cm, the tail is about the same length. The weight of this species reaches 400 g. Rarely, individuals weighing 500 grams are found.

There are cases when a gray rat attacked a person. True, she does this mainly for self-defense. Omnivores and accumulate in large quantities in landfills and garbage dumps. They are carriers of various diseases. Able to gnaw metal and concrete. They reproduce very quickly. At the age of three months they are able to bring offspring. The number of pups in the litter reaches 20 pieces.

Black settles mainly in the southern regions of Russia. Prefers dry rooms and attics. But in nature it settles next to rivers and lakes. A favorite habitat are sea ships.

In size, the black rat is smaller than the pasyuk. In length up to 22 cm, with a tail of 28 cm. And the weight of this species is from 130 to 300 grams. The coat color is black, hence the name of the species. Eats grains, fruits, vegetables, worms, insects, bird eggs. There can be up to 15 rat pups in the litter. The life expectancy of these rodents in nature is an average of 1 year.

How big are sewer rats and are there giant mutants among them?

In Russia, next to a man, in the attics, in the basements and in the sewers of his houses, two types of rats settle - gray (pasuk) and black. They are similar to each other, but gray is larger: the body length of adults of this species can reach 25 cm (excluding tail length), and weight - 400 grams. However, even to the size of a cat, gray rats usually do not grow.

In the photo below - a gray rat:

And here is black:

Black rats are smaller than gray: the largest individuals of this species reach a length of 22 cm from the tip of the nose to the base of the tail, and their weight rarely reaches 300 grams.

The pasuk, the larger one, is precisely the very draining (“sewer”) rat that willingly populates collectors, damp basements and ground floors. The black rat prefers to settle in dry rooms and in attics. Other rat species have never been found in the Russian urban jungle, and the stories that huge dog-sized rats live in the Moscow metro are just rumors that have not been confirmed yet (however, we’ll talk about huge “mutant rats” below )

Anyway, the biggest rat in Russia is the same pasuk. The fact is that all representatives of the rat genus are thermophilic, in a temperate or cold climate they can live only next to humans. In the wild in the south of our country, only black rats live, inferior to gray in size, and larger species are known only from tropical regions. That is, even in the Siberian wilderness or in the endless steppes of southern Russia, huge rats are not found.

Mutant Rats

Often you can hear incredible stories about gigantic rodents populating the metro, abandoned military facilities. But all this is just a stormy fantasy of people who are bored of living without myths. And the yellow press thus attracts readers, increasing the sale of their newspapers and magazines.

After reading, someone retells and exaggerates to look spectacular.
In fact, the largest rat in Russia is the pasuk. In the subway tunnels, at military facilities, they are all the same as in everyday life in front of a person. There may be larger specimens, but this is not the result of a mutation, but simply from the “good” life of rodents.

Rat-like animals

You can call a rat almost any rodent. This is facilitated by a rat-like structure of these animals. Nevertheless, they belong to different, and not to the same species.

These animals include:

  • Capybara. It is the largest rodent in the world. Its appearance at the same time resembles a rat, a dog and a wild boar. It reaches 1.35 m in length, 60 cm in height, and the weight of adult animals is from 65 to 90 kg.
  • Beaver. Lives near ponds. It feeds on tree bark and young shoots. It grows to 1.3 m in length and weighs up to 32 kg.
  • Nutria. Lives near ponds, an excellent swimmer. It feeds on plant foods. It grows to 60 cm in length and weighs up to 12 kg.
  • Groundhog bobak. These animals live in deep burrows located in the steppe. Weigh up to 10 kg, reach a length of up to 70 cm. The food of marmots includes plant foods, as well as insects. Rodents live up to 10 years.
  • Mongoose. This animal is also somewhat remotely similar to a rat. Only he has a fluffy tail. Grows, depending on the species, from 18 to 75 cm, weight from 280 g to 5 kg. Lives about 8 years, but at home or in a zoo twice as much. It feeds mainly on protein foods.

More on huge mutant rats

Nevertheless, the stories of giant mutant rats in the Moscow metro or in abandoned military bunkers remain surprisingly tenacious. Their phenomenon is easy to explain: people do not want to put up with the grayness of their everyday lives and are willing to believe in almost any unusual and inexplicable phenomena, even if they are frightening. After all, these “horror stories” give hope that the world around is not as mundane and dull as it seems most of the time, and there is certainly a place in it for certain riddles - including mutant rats.

Simply put, people want to believe in the existence of monster rats, and science fiction writers, horror film directors and rumors-mongers simply exploit these fears for their own benefit. As a result, more and more new versions of “facts” and “eyewitness accounts” are constantly appearing, and the old ones are repeatedly changed and turned into more and more new options, sometimes not at all like the originals.

For example, the stories allegedly told by the Moscow metro drivers are very famous. According to them, in the farthest sections of the tunnels, huge rats the size of a dog from time to time get into the headlights of trains and cross paths. Most of these stories are full of chilling details: in that brief moment that a ray of light snatches a rat out of the darkness of the tunnel, the animal manages to look at the driver with evil green (in other versions, red) eyes, and then news suddenly appear that these animals not a single poison acts. It is not known which of the drivers tried to poison these mutants (just as the names of those who, in fact, saw these animals are not known), but most storytellers consider it their duty to mention such immunity.

The allegedly real story that happened to a group of Moscow diggers (specialists involved in the study of caves and artificial underground tunnels) is also popular. In the collector under the zoo, this team was attacked by five large rats the size of a dog, and the guys survived only by throwing their crowbars into the animals and scaring them off in this way.

This story was continued. They say that an anonymous club later called the digger club, reporting that there are a lot of large rats in secret bunkers for storing radioactive waste. It is well known that the more secrecy and conspiracy theories are in the bike, the more popularity awaits it ...

Also, people circulate stories of giant rats, climbing out of hatches near dumps and dispersing dogs here. Moreover, these stories are unusually tenacious: the first reports of such rats appeared back in 1989, and after that their number only increased.

It is interesting to note that the less plausible each particular story is, the easier it is spread among the people. It is the details that seem fantastic that make such bikes “hot”: either huge rats create complex organizations with commanders, pioneers and suicide bombers, or they deliberately eat poisons or winding wires - you can’t count such details.

Someone even tries to interfere in one heap and rumors about mutant rats, and news about the discovery of woolly ratsaw Bosawi. The result is a mix unimaginable for a specialist that, they say, scientists discovered in the Moscow subway a new type of giant rat - Indonesian. Why Indonesian? Yes, simply because such a name is simpler than "woolly rat Bosawi" or "rat from Papua New Guinea."

We will not waste time refuting such speculations, but only say that none of these rumors has actual evidence.

Giant Afghan and Pakistani Rats

This is another story from the section of myths and legends. It dates back to the 80s, associated with owners of dachshund dogs. As if the behavior of these pets was similar to the habits of rats.

Animals could spontaneously attack the owner and bite him. And when examined by veterinarians, it was as if it turned out that this was not a dachshund, but a giant rat from Afghanistan or Pakistan, sold to the owner with the aim of deceiving him.

In fact, in these countries the rats are the same as in Russia. And in nature, a rodent has not yet been found that is so similar to a dog.

Half a kilogram of domestic rats - reality

Like basements, decorative domestic rats usually do not grow to the size of cats and dogs. The fact is that such pets are ordinary gray rats, which, through long selection, managed to achieve a beautiful color or consolidation of albinism in the genotype.

But breeders did not work on increasing the size of domesticated rats - there was simply no particular need for this. Still, rats are not cattle, no one grows them for meat, and therefore no one needs to bring out giants from them like huge rabbits or cows.

As a result, in captivity, rats grow to about the same size as in a basement or wildlife. But it should be recognized: in cells, in conditions of lack of physical activity and an abundance of food, many of them eat away and grow fat. As a result, individual copies of pets sometimes reach a weight of 500 grams or more.

However, there is no reason to say that they are giants (in terms of genes). Their maximum size is the same as that of half-wild relatives, but weight is just a gain. They are simply “fat men”, the same as individual representatives of the human race, weighing 300-350 kg each and not at all “giants”.

Therefore, remember: both white rats, and original "huskies" or naked rodents in an adult state are approximately the same in size, and they are not very large. Find and buy somewhere a huge rat weighing a kilogram does not work.

In the photo - a large male white laboratory rat:

And, by the way, pest rats in the basement or in the chicken coop have normal sizes for their kind, and conventional means are used to combat them. The rat trap for them is a crush of standard “rat” dimensions, or a live trap designed specifically for rats. Even if a very large specimen falls into the trap, it will have enough stock in size to kill or hold prey.

Other large rat species

In general, the Bosavi woolly rat is the largest and virtually unrivaled among the true Rattus rats. Animals of similar sizes and similar to rats are in reality not rats, and the corresponding names get only due to external similarity.

For example, the so-called nezomyids, a family of rodents common in Africa, are similar to rats. Among them there is a Gambian marsupial rat (it is also a giant marsupial), the body length of individual representatives of this species can reach up to 90 cm, but because of their harmony and mobility they weigh a maximum of 1.2-1.4 kg.

The giant marsupial rat is shown below in the photo:

This species is known, first of all, not for its size, but for serving people - thanks to the delicate scent of Gambian marsupial rats they are used to search for and neutralize mines. Training and training of one such “animal-specialist” is several times cheaper than training a sapper dog, with the same work efficiency.

Other examples of large, but not real rats are:

  • Big reed rat. This animal also lives in Africa, has a very dense physique, reaches a length of 61 cm, and individual adult males can weigh up to 9 kg. In the photo below you can estimate the size of the representative of this species:

  • Big bamboo rat, the hero of the replicated Internet news that "a giant rat is caught in China." It lives in SEA, including China, reaches a length of 50 cm and a weight of 4 kg. The photo below is an illustration of a typical "yellow" news:

However, in reality, from rats these animals have only a name. With real rats, representatives of the genus Rattus, they are related to the same extent as baboons are related to humans.

It is just as incorrect to compare representatives of these species with pasukas as, for example, nutria - the latter are also very large, belong to the rodent family and resemble rats in appearance. But it doesn’t occur to anyone to spread the news on the Internet that, they say, a giant mutant rat was caught in Azerbaijan and confirmed with a photograph of a farmer with nutria mined at the stake.

But since we were talking about large relatives of rats, it would be fair to mention the largest rodents in the world. Moreover, to one extent or another, these animals really look like gray basement pests ...

The largest rats in Russia

From Russia to New Guinea it is very far away, but for some reason the Moscow metro drivers love to retell scary stories about huge rats the size of a large dog, living in underground tunnels. These gray monsters have burning green or red eyes, are characterized by increased aggressiveness and complete immunity to all known poisons.

Chilling blood is far from reality, since in Russia the largest gray pasukas, when measured from the nose to the tip of the tail, have a length of not more than 40 cm, and sat down to measure to the base of the tail - that's 25 cm at all. Therefore, all the stories about huge rat monsters in Russia just fiction.

Gray rats weigh about 400 g; they live in sewers, basements, basements, eating leftover food in urban landfills. In warm weather, Pasyuki can live in burrows along the banks of lakes and rivers, invading a person’s dwelling in winter in search of food. Predatory rodents can eat any kind of food, both animal and plant origin. The invasion of gray rats scares most people because of damage to property, aggression against humans and dangerous infectious diseases that are transmitted by pasukah.

The closest relative of gray pasukas are black rats living in Russian dry basements and attics. Black animals are much smaller than their counterparts and have a body length of 22 cm and weighing 300 g. Neither black nor gray pasyuki can reach the size of a cat, and even more so dogs, therefore it can be referred to bikes about hordes of monster rats in Russia with light the irony.

Pet rats were bred in sterile laboratory conditions, they have become very popular pets. Small rodents, unlike their wild relatives, are distinguished by a human orientation and a strong attachment to the owner. Decorative rats have a developed mind, a sense of humor, the ability to empathize and laugh.

Depending on the breed and gender, decorative pets reach a size of 18-20 cm and weighs 300-350 g. Of course, sometimes amateur rat breeders boast photographs of large domestic rats weighing about 500 g, but these records are the result of common obesity due to overfeeding and lack of regular exercise.

Giant marsupial rat

A giant marsupial or Gambian rat lives in Africa, a large rodent grows up to 90 cm in length, having a body weight of up to 1.5 kg. In appearance, the smartest mammal, indeed, resembles a huge gray pasuk, but it is a close relative not to rats, but to mice.

In addition, the marsupial rat in no way applies to marsupial animals having a bag for carrying newborns. Cubs of a huge rodent are born ready for life in the external environment and live with their mother in a nest.

The name “marsupials” was given to large African animals for large cheek pouches in which Gambian rats carry food like hamsters.

The giant rodent, like the pasyuki, is an omnivorous animal that uses fruits, vegetables, termites and snails for food. Unlike rats, the African mammal suffers from low vision, which is more than compensated by a very developed sense of smell. This feature of an African rodent has been successfully used by the Belgian organization AROPO, which teaches smart animals how to detect tuberculosis and anti-personnel mines. Thanks to its high intellect and peaceful nature, the giant marsupial rat has even become a pet in southern countries.

Big cane rat

Another large rodent that lives on the shores of African reservoirs. The favorite residence of the large reed rat is shrubbery near rivers and lakes, marshy places, cultivated plantations and human settlements. The furry mammal has a very dense physique, with a growth of 60 cm it reaches a weight of up to 9 kg. The local population successfully hunts cane rats, using animal meat for food.

Big cane rat

A well-fed rodent swims very well, often spends most of its time in water. Unlike omnivorous pasukas, cane rats are exclusively herbivores that feed on sugarcane, corn, pumpkin, yams and elephant grass. Attacks of numerous swarms of large rodents cause serious damage to agriculture, therefore, African farmers use pythons and mongooses that eat pests to protect the fields.

Big bamboo rat

Large fluffy rodent living in southern China, North Burma and Thailand. A large animal grows up to 50 cm and has a body weight of up to 4 kg. The main habitat of a large mammal is burrows and long underground passages, which rodents dig with their powerful claws. The animal eats plant foods: roots and stems of bamboo, as well as fruits of tropical trees.

Big bamboo rat

The big bamboo rat became the star of Internet videos after a resident of China caught a huge specimen of this species weighing 11 kg. But, unfortunately, this record was not fixed anywhere, and remained only in the form of an impressive picture of a short Chinese with a giant gray rodent in his hands.


Capybara or capybara is rightly considered the largest rodent on the planet. Animals have a body length of 1-1.4 m with a weight of up to 65 kg. Outwardly, the capybara resembles a huge well-fed guinea pig, but not a rat at all, so it is extremely difficult to take a waterfowl rodent for a huge pasuk. The mammal, unlike rats, has a large rounded head with a blunt muzzle, a massive overweight body with short legs, having swimming membranes.


Capybara lives exclusively in countries with a warm climate: Argentina, Venezuela, Brazil, Colombia, Peru, Uruguay. For their home, capybaras choose the banks of large rivers, but with a lack of food, animals move overland over long distances. For food, rodents use only plant foods. Due to its large size and tasty meat, reminiscent of pork, capybaras are bred on farms in Venezuela. The skin of a mammal is used to make leather goods; fat is used in the pharmaceutical industry.

Big rats

We will now make a list of the largest rats. On this list are all the largest rodents that are on the planet. The record among the largest rats in the world is considered to be a rat caught in China. This instance weighed eleven kilograms. The length of the tail reached 30 centimeters. Although this fact is not recorded anywhere.

In addition, all the stories about the discovery of the largest rat in the world - 18 kilograms in weight, also have no evidence. The rodent, which has grown to such a size due to the high level of radiation, is actually a myth.

Gambian marsupial Living in Africa, the Gambian marsupial entered the top 10 largest rats in the world. In fact, she does not have a bag, like a kangaroo.

The largest rat in the world photo

She got her name for carrying food in bags over her cheeks like a hamster. An interesting fact about this rat is that the representatives of this breed lend themselves very well to training. Therefore, they are used in special services to search for explosives. These rats weigh no more than 1.5 kilograms. Body length can reach one meter.

Big reed another rodent native to Africa on the list of the largest rats in the world is the big reed. They grow up to half a meter. The weight of representatives can reach nine kilograms.

The largest rat in the world photo

Red kangaroo and chain leg (musky kangaroo) rat from Australia, a rare species is called red kangaroo. Body length about 0.5 meters. It lives in Australia and on the island of Tasmania. This rat has a bag in which it carries its cub. The largest specimens reach a body size of up to forty centimeters. The bamboo rat in Southeast Asia is a relatively small specimen. The body reaches a length of eight centimeters. The herbivore feeds on bamboo, lives in holes.

The largest rat in the world photo

A musky kangaroo, also called a chain leg. A musky smell emanates from this animal. He also climbs trees perfectly. Large representatives of this species reach a body size of more than 30 centimeters. It feeds on insects, plant roots, and worms.

The biggest rats in the world. Interesting facts about rats.

All the rats that are in the top are completely non-aggressive, most of them feed on plant foods. The exception is gray and black. These rodents eat everything.

The teeth in rats grow throughout life. In order to grind them, they constantly nibble on something. The teeth are so strong that a rat can easily gnaw through a metal grill or make a hole in a concrete wall.

It was experimentally established that rats have musical preferences. Of the three options, experimental animals chose classical and modern melodic compositions, not wanting to listen to mechanical noises.

There is a known fact when, with the help of rock music, a rat colony was expelled from their favorite building. It happened by accident when a rock concert was arranged in this building. Prior to this, no means to combat rodents did not help.

Rats can talk with their throats. Their vocabulary is quite large. More precisely, they communicate using sounds and ultrasounds: peeping, whistling, hissing, grinding teeth, different types of screeching. With the help of chirping, they inform the relatives of the danger.

The title of the largest rat, whose records are listed in the Guinness Book of Records, belongs to the same woolly Bosawi. This name was invented by scientists who discovered this species of rodent on the island of Sumatra. Unfortunately, there is no scientific name yet.


Also known as the giant beaver, the castoroid is an extinct North American rodent that existed during the Pleistocene. Weighing 125 kg, the animal’s body was 188-219 cm long, although it is not known what additional length the tail could add to the body.

Castoroids is the largest beaver species that has ever lived on Earth. It differed from the modern beaver in that the extinct had large front and short hind legs, wider teeth and a smaller brain.

Castoroid fossils are found in Ohio, Alaska, Florida, Indiana, Illinois, around the Great Lakes.

Swedish viking rat

2014, a mega-rat larger than 38 cm was discovered in the kitchen of the Bengtsson-Korsos family in Solna, Sweden. Gnawed at wood and concrete to enter the apartment, caught using an industrial-size trap. She was so large that she suffocated to death when she headed back to the tunnel with a trap on her tail.

Judging by a number of observations in Europe, Great Britain, the United States, the Viking rat - as it was dubbed by fighters - indicates a mutation. Experts who have observed them describe the animal as twice the size of ordinary rats, the size of a cat.

In Dublin, fighters caught a 60-centimeter individual inside the apartment.

Bromadiolone venom does not act on the rodent. According to a study by the University of Huddersfield (2009), genetic mutations and immunity to poisoning have developed together, which raises the question: do I need to develop new poisons with each mutation?

Large varieties of rats

The Bosawi rat is considered the largest rat, because its length is about 82 cm and its weight is about 1.5 kg. In appearance, this rodent resembles a gray city rat with short hair.

This species of rodent was found in the inactive crater of Bosawi, on the territory of Papua in New Guinea. This rodent is absolutely peaceful and does not show any aggression. At the sight of a person, he does not run away and allows himself to stroke. He prefers to live in one place and does no harm.

In other places, the Bosawi rat does not occur, and the appearance in another place may be associated with forced migration.


Fossils of this prehistoric species were first discovered during excavations (1981) of Montevideo, Uruguay, where scientists stumbled upon a 53-centimeter skull that is larger than a modern cow. Being the largest rat of all time, Josephoartigasia controlled the forests of South America during the Pliocene era with a body weight of more than 900 kg.

The creature had unique incisors that indicate herbivorous food. However, this does not mean that Josephoartigasia did not kill animals in order to survive. Scientists suggest that teeth not only serve as weapons against predators, but are used in battles for breeding rights.

Living about four million years ago, the rat shared the Earth with monstrous birds, carnivorous marsupials, large hungry cats. Of modern creatures, Josephoartigasia most closely resembles a large capybara.

Other types of huge rats

There are species of rodents that resemble rats, but they have nothing to do with them, although they belong to the same species. In this regard, many people form the wrong opinion. If you photograph a large animal, similar to a rat, and sign under the photograph that it is “the largest rat”, then out of ignorance, almost everyone will believe it.

Prehistoric rats

Scientists have found that ancient rodents lived in South, Central and southern North America. Excavations of skeletons revealed that prehistoric rats were much larger than their modern relatives. Outwardly similar to beaver, capybara, pacarana. Ancient rats (telomyces, fauberomys) grew up to 2 m, and the weight reached 680 kg. Mostly ancient individuals fed on plant foods, but there were species with other preferences.

Rats are very interesting, and having studied their habits, a person will not be so wary of them. Rodents are used in laboratories, in some countries they are eaten. But, there are also countries where rats are venerated and protected, like sacred animals. In India, there is even a temple in which rats are fed, watered and protected from troubles. Now you know which rats are truly the largest in the world.

Woolen bosavi

One recent discovery was that a woolly rat was first discovered by scientists in 2009 when a research team stumbled upon a beast in Bosavi Crater, Papua New Guinea.

It is believed that Bosawi had no contact with people, his length is 81 cm, which makes her the largest living rat in the world. Due to the status of a recent scientific discovery, the silver creature has yet to be given an official name.

There were also 40 more previously unknown species, 16 amphibians, three fish, a gecko, marsupial, several arachnids - none of which exist in other parts of the world.

Although Woolen Bosawi is the largest rat currently known to science, it is not the largest that has ever existed. Scientists from East Timor, Indonesia, at the center of evolution of rodents, discovered the remains of an animal that was three times as large as woolly.

“This is one of the largest rats in the world of the same type that live in urban sewers,” said Dr. Christopher Helgen of the Smithsonian National Museum of Natural History, who accompanied the expedition.

Prior to this, six other species of giant rats were discovered in Papua New Guinea. All seven are classified as belonging to the genus Mallomys, the rodent family of Muridae.

Giant gutia

Living more than 100,000 years ago on the island of Anguilla, the Caribbean, this large rat was twice the size of an adult and 1000 times larger than modern rats. Officially known as Ambyrhiza, an extinct creature is unofficially referred to as giant goutia.

Fossil records indicate that there were no competing mammals in Anguilla during the creature's existence. The end of the period led to a rise in sea level, to which the goutia could not adapt, which led to the extinction of the animal.

Smaller descendants of the ancient species roam the islands of the Caribbean today, but most weigh a little over 2.5 kg. These modern pests are often found in the Guantanamo Bay area of ​​Cuba, where they are called banana because of the shape of the litter.

African rat

Sunshine is trying to prevent the spread of giant Gambian, African rats. Over ten years ago, eight were released by a breeder of exotic animals on an island in Klyuchi. Until now, efforts to eradicate pests have been unsuccessful, authorities fear that rodents will reach the mainland and damage Florida’s ecology.

The African rat grows up to 50 cm in length, weighs 4 kg. The numbers on the Gambia information site are much more modest: 43 cm, 3 kg. However, if rats have better nutrition than in Africa, the numbers are correct.

Chinese bamboo rats

A grilled rat is not to everyone's taste, but in China this delicacy is four times more expensive than pork and chicken and is believed to cure baldness. They are bred as livestock, for meat and fur.

Chinese bamboo rats are by nature large, but for sale they reach a weight of 4 kg, 50 cm long.

Norwegian rat

Taxonomically known as Rattus norvegicus, grayish brown, widely distributed throughout the world, despite the Scandinavian nickname. With a body of 17 -25 cm and a tail of 15 -20 cm, adult individuals reach 45 cm. This is not the largest rodent, but certainly one of the worst.

Protect your property from large rodents

Although you are unlikely to encounter the largest rat in the world, small pests can still get on your property. Be it rodents, mice invading the house, or molesdigging a lawn, garden beds, viruses are transmitted through rat bitesDo a lot of harm.

They gnaw through wires, chew trees, uproot the soil, destroy shrubs.

When you notice signs of pest activity, end them with traps and repellents.

Asia and New Guinea

  • Flores, Papagomys armandvillei,
  • Mountain giant Sunda, Sundamys infraluteus,
  • The giant southerly-tailed Phloeomys cumingi, the northern Luzon Phloeomys pallidus,
  • Giant rats with white ears, Hyomys dammermani, Hyomys goliath,
  • Large bamboo, Rhizomys sumatrensis.


Not all rodents that resemble rats are members of the genus “Rattus”. However, almost all domestic rats, even bizarre ones, are “Rattus norvegicus,” or Norwegian. The body of the pests is about 20 cm, a much greater variety of sizes exists in the wild, where some species of rat-like rodents reach the size of raccoons.

Gambian rats with giant bags are called the largest rat in the world. But those found in Papua New Guinea are just as huge, and those raised as cattle in China are hefty.


In Africa, there is a large rat with unique abilities. This rat is called the Gambian, giant marsupial. The animal weighs up to one and a half kilograms and grows in length to almost 90 cm.

This rodent is unique in that it has a very delicate scent, even finer than that of dogs. Therefore, the animal is used to search for mines, but before that it is trained. The rodent lends itself to training and quickly assimilates its functions than a dog. At the same time, the entire process of training and maintenance is much cheaper.

Interesting fact! The animal has large cheeks, so it was called “marsupial,” but it does not have bags like the kangaroo. In the mouth behind the cheeks, the rodent hides the objects of subsistence when he procures them for the future.

Reed rat

This species of rat prefers to inhabit warm countries, therefore it lives in Africa. At the same time, he can live in other countries, but in artificially created conditions close to African ones. The animal grows in length over 60 cm and can weigh up to 9 kg. The animal has almost no ears, and the nose is blunt, so the resemblance to a rat is minimal. If a person does not understand the species, then he can assume that the rat is the result of radiation or chemistry.

Rat bamboo

At one time, the press reported that a huge rat was discovered in China. Moreover, in the photographs one could see bamboo rats that have nothing to do with ordinary gray pests. This variety is found in China, as well as in other countries of Southeast Asia.

They grow up to half a meter in length and gain weight up to 4 kilograms.

Representatives of the press often chase after information that can make a splash. Therefore, for unknown reasons, there are reports of a meeting with giant rats, which are not confirmed by anything, except as eyewitnesses, who most likely do not understand the species. According to scientists, there is no reason for concern, since the sizes of certain animals are in the genes.


Beavers also belong to the rodent family and are found in many places, especially on small rivers where they build dams. Beaver can easily be confused with a huge rat, both in the shape of its muzzle and body. At the same time, the tail differs in a flattened shape, similar to a wide oar. Individuals grow up to a length of 50 cm and gain weight more than 30 kg. It is in second place among the "largest rats in the world."

Interesting fact! In North America, a beaver was discovered, weighing almost 350 kg and up to 2 and a half meters long. However, it is not known how old the beaver was and what led to such genetic changes.

Marmot Bayrak

This animal lives in the fields, in natural conditions. With the onset of winter, the animal hibernates, so in winter it is not visible. It grows in length up to 70 cm, gaining weight up to 10 kg. As a rule, this weight is typical in the fall, when the animal begins to stock up on nutrients for the winter. They prefer to be away from a person and, in case of danger, quickly hide in a shelter (in burrows).

Modern human activity leads to the fact that it harms the normal life of many living creatures, including rats, although they quickly adapt to an unfavorable environment. Increased radiation, an abundance of chemistry, as well as the creation of genetically modified products - all this is a trigger for changing the structures of the gene chains responsible for the growth of living things. Therefore, in our time there is a great risk that giant rats can appear that can threaten human life. Unfortunately, this is a fee for a thoughtless attitude to nature, which often leads to environmental disasters.

Most likely, articles that occasionally appear in the press are related to reminding the person what awaits him if he continues to behave this way further. Nature is a rather subtle matter that will not tolerate outside interference.