animal order - the order of animals

Eutheria, subclass Eutheria - all mammals except monotremes and marsupials

gnawer, gnawing animal, rodent - relatively small gnawing animals having a single pair of constantly growing incisor teeth specialized for gnawing

Myomorpha, suborder Myomorpha - true rats and mice and related rodents

Hystricomorpha, suborder Hystricomorpha - an order of rodents including: porcupines; guinea pigs; chinchillas; etc.

Sciuromorpha, suborder Sciuromorpha - large more or less primitive rodents: squirrels; marmots; gophers; beavers; etc.

naked mole rat - fetal-looking colonial rodent of east Africa; neither mole nor rat; they feed on tubers and have a social structure similar to that of honeybees and termites