Rhythmicity of hamster gnawing: ease of measurement and similarity to running activity.
D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D002369:Castration; D002940:Circadian Rhythm; D006224:Cricetinae / Q000502:physiology*; D004971:Estrus; D005260:Female; D008027:Light; D008297:Male; D008647:Mesocricetus / Q000502:physiology*; D009043:Motor Activity / Q000502:physiology*; D005082:Physical Exertion; D011247:Pregnancy