1. Similar to hamsters.
2. The family Cricetidae consists of New World rats and mice, gerbils, hamsters, lemmings, and voles.

These are large cosmopolitan families of small terestrial to arboreal myomorph rodents comprising about 500 species.

Their habits may be fossorial (animals that have large forelimbs or other adaptations for digging and burrowing) or semiaquatic, often nocturnal, feeding on a variety of plant material and insects.