Rodentia

From Hamster Central WIKI

Rodentia is an order of mammals also known as rodents, characterized by two continuously-growing incisors in 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, chipmunks, gophers, porcupines, beavers, hamsters, gerbils, and guinea pigs. Rodents have sharp incisors that they use to gnaw wood, break into food, and bite predators