A South American rat-like rodent, Octomys mimax.

(archaic) The ringed seal (the animal), especially the .

plural of floe rat

plural of chinchilla rat

Any of the caviomorph rodents of family Abrocomidae.

plural of spiny rat

Any of certain caviomorph rodents of the family Echimyidae, especially of genus Proechimys, that resemble rats and have stiff, pointed hairs, or spines.

(archaic) mole rat

plural of cotton rat

Any member of the rodent tribe Sigmodontini, that build their nests from cotton, and can damage cotton crops.