The name giant rat has been applied to various species of large rats (or animals that appear similar to large rats) and may refer to: Africa. While the bodies of these rats average about 8 inches in length, far more size diversity exists in the wild, where some species of rat and rat-like rodents reach the size of raccoons. The Gambian pouched rat (Cricetomys gambianus), also known commonly as the African giant pouched rat, is a species of nocturnal pouched rat of the giant pouched rat genus Cricetomys, in the family Nesomyidae.The species is among the largest muroids in the world, growing up to about 0.9 metres (3 ft) long including the tail which makes up half of its total length. Genus Beamys (long-tailed pouched rat) 1 species. Usually, rats are considered pests and people use many methods of exterminating them. Each species of pack rat is generally restricted to a given type of habitat within its range. Julien Louys, of The Australian National University, holds the jaw bone of a giant rat species discovered on East Timor, up against a comparison with the same, much smaller, bone of a modern rat. More than 100,000 years ago, monsters rule Anguilla’s Caribbean island. However, the rats evolved and mutated to much strong species. A new species of rat, four times larger than regular rodents, has been discovered on the Solomon Islands in the Pacific Ocean. Subfamily Cricetomyinae (African pouched rats) 5 species in 3 genera. It can grow up to weight more than 500 grams. East Indonesia is a “hot-spot” for rodent evolution. Pack rats live anywhere from low, hot, dry deserts to cold, rocky slopes above timberline. These are probably my favorite variety just because they’re so cute. And, if your dread of the small rats is not enough, what could be your reaction when you meet the top 10 biggest rat species that ever walked on the face of the planet? Pack rats build complex houses or dens made of twigs, cactus joints, and other materials. Archeologists in East Timor unearthed the bones of a rat three times larger than the Bosavi specimen dating from this period. These rats are nothing but giant balls of curly fur. The giant rat expedition uncovered the remains of 13 rodent species, 11 of which were unknown to science. A rat is a long rodent from the superfamily Muroidea. These extinct giants weighed up to 6 kilograms (13 lb). Genus Cricetomys (giant pouched rats) 2 species. But the following rats will amaze you by their sizes. This article was most recently revised and updated by Amy Tikkanen, Corrections Manager. Their fur is extremely curly throughout their body – though the belly more closely resembled that of a standard rat. Male rats tend to have better, healthier fur than the females, though. Giant Hutia. 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