The hamster is small or medium in size, with a rather dense constitution, with 4 short legs with sharp claws, with a small rounded head, with a slightly thinner muzzle, small or rather small ears (like those of genital hamsters), large mustaches, dark eyes- beads and tail from 4 mm to 23-24 cm in length (as in webbed or forest hamsters). A hamster can be both almost naked (for example, in rat hamsters) and fluffy (for example, in a hamster Neotoma cinerea).