Must have items to chew to wear down constantly growing teeth. Habitat requires plenty of room and nest building material as well as a medium for burrowing. Larger than a mouse and smaller than a guinea pig. N. China, Siberia, Iran and Mongolia. Captive bred since 1930's.
Several breeds are now available.
Can be tamed to accept handling. As nocturnal animals hamsters should not be disturbed or handled during the daytime. Shy, solitary creatures. Require calm and quiet daytime environment. Require a habitat that allows for ample nightly exercise.