Hamster n. : A small European rodent (Cricetus frumentarius). It is remarkable for having a pouch on each side of the jaw, under the skin, and for its migrations.

Example:
What kind of Hamster mix brand makes the best Hamster food for my Dwarf Hamster?

Taxonomy
hamsters, Species, food, genus, Chinese hamsters, Syrian hamsters, subfamily, pets, litter, Cricetinae, Golden Hamster, dwarf hamster, hamster species, tail, the hamster, Russian dwarf hamster, captivity, Phodopus.

Defination from the web:
hamsters as pets and their health problems. ... Although the Golden Hamster (Mesocricetus auratus) was first described scientifically in 1839, it was not until 1930 ...