Rat societies.
D000374:Aggression; D000818:Animals; D001362:Avoidance Learning; D001522:Behavior, Animal / Q000502:physiology*; D005260:Female; D005518:Food Preferences; D006120:Grooming; D006801:Humans; D008297:Male; D051381:Rats / Q000502:physiology*; D012919:Social Behavior