How to sign: relatively small gnawing animals having a single pair of constantly growing incisor teeth specialized for gnawing
Similiar / Same: rodent, gnawing animal
Categories: eutherian, eutherian mammal, placental, placental mammal
Within this category: abrocome, agouti, beaver, capybara, cavy, chinchilla, cotton rat, coypu, dormouse, gerbil, hamster, jerboa, jumping mouse, lemming, mara, marmot, mole rat, mole rat, mountain beaver, mountain chinchilla, mountain paca, mouse, murine, muskrat, New World mouse, paca, porcupine, prairie dog, rat, round-tailed muskrat, sand rat, squirrel, viscacha, water rat, wood rat