- Rodentia, order Rodentia - small gnawing animals: porcupines; rats; mice; squirrels; marmots; beavers; gophers; voles; hamsters; guinea pigs; agoutis
--1 is a kind of animal order
--1 is a member of Eutheria, subclass Eutheria
--1 has members:rodent, gnawer, gnawing animal; Myomorpha, suborder Myomorpha; Hystricomorpha, suborder Hystricomorpha; Sciuromorpha, suborder Sciuromorpha; naked mole rat