How many rodents are in the world

Caviidae: information 1 Caviidae: pictures 36 Caviidae: specimens Chinchillidae: information 1 Chinchillidae: pictures 5 Chinchillidae: specimens Ctenodactylidae: information 1 Ctenodactylidae: pictures 3 Ctenodactylidae: specimens 8. Ctenomyidae: information 1 Ctenomyidae: pictures 4 Ctenomyidae: specimens 6. Cuniculidae: information 1 Cuniculidae: pictures 3 Cuniculidae: specimens 9. Dasyproctidae: information 1 Dasyproctidae: pictures 10 Dasyproctidae: specimens 11 Dasyproctidae: sounds 1.

Dinomyidae: information 1 Dinomyidae: pictures 1 Dinomyidae: specimens Dipodidae: information 1 Dipodidae: pictures 33 Dipodidae: specimens Echimyidae: information 1 Echimyidae: pictures 8 Echimyidae: specimens Erethizontidae: information 1 Erethizontidae: pictures 26 Erethizontidae: specimens Geomyidae: information 1 Geomyidae: pictures 13 Geomyidae: specimens Gliridae: information 1 Gliridae: pictures 11 Gliridae: specimens Heptaxodontidae: information 1 Heptaxodontidae: pictures 1.

Heteromyidae: information 1 Heteromyidae: pictures 9 Heteromyidae: specimens Hystricidae: information 1 Hystricidae: pictures 20 Hystricidae: specimens Muroidea: information 1 Muroidea: pictures Muroidea: specimens Myocastoridae: information 1 Myocastoridae: pictures 2 Myocastoridae: specimens 7. Octodontidae: information 1 Octodontidae: pictures 9 Octodontidae: specimens 6. Pedetidae: information 1 Pedetidae: pictures 3 Pedetidae: specimens 7. Petromuridae: information 1 Petromuridae: pictures 1 Petromuridae: specimens 8.

Sciuridae: information 1 Sciuridae: pictures Sciuridae: specimens 69 Sciuridae: sounds 1. Thryonomyidae: information 1 Thryonomyidae: pictures 2 Thryonomyidae: specimens They are found in a variety of habitats including rainforests , deserts , swamps , tundra , coniferous and deciduous forests, and grasslands. They range in size from the smallest of mice to the pig-sized capybara. Most species are omnivores , but some species are herbivores. Some species, like chipmunks and hamsters, have pouches on the sides of their mouths for storing food.

Section Navigation. Facebook Twitter LinkedIn Syndicate. Minus Related Pages. Seal Up! Trap Up! In China, when the water levels of Dongting Lake rose, millions of rats were flushed making it difficult to count.

Bobby Corrigan, a rodentologist from America ranked Philadelphia, New York, and Boston as the highest rat infested cities. This is due to the dense population since the increase in human population is directly proportional to increase in rat growth in urban centers. London city has an estimated seven million rats. A rat matures sexually between the ages of 4 and 5 weeks from birth and takes only 21 to 23 days to bring forth offspring.

An average female can give birth to 6 to 8 pups. Thus, in one year it can give birth 6 times. This means that a single female can bring forth over 50 rats per annum. The mortality rate is very low because they live in groups to protect the young ones.