|Rodents are mammals of the order Rodentia, characterised by a single pair of continuously growing incisors in each of the upper and lower jaws which must be kept short by gnawing.
Forty percent of mammal species are rodents, and they are found in vast numbers on all continents other than Antarctica. Common rodents include mice, rats, squirrels, porcupines, beavers, guinea pigs, and hamsters. Rodents use their sharp incisors to gnaw wood, break into food, and bite predators. Most rodents eat seeds or plants, though some have more varied diets.
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|Australian Water-rat||†Bavarian pine vole||Beavers|
|Naked mole-rat||Desert mouse||Eurasian harvest mouse|
|Flying squirrel||Giant kangaroo rat||Guinea Pig|
|Hamster||†Horned gopher||House mouse|
|Japanese dormouse||Japanese grass vole||Jerboa|
|Large Japanese field mouse||†Lesser stick-nest rat||†Little Swan Island hutia|
|Long-tailed chinchilla||Marmots||Mongolian gerbil|
|Muennink's spiny rat||Muskrat||New World porcupine|
|Old World porcupine||Ryukyu rat||†Short-tailed hopping mouse|
|Springhare||Tree squirrels||†White-footed rabbit-rat|