title: Age of intruder and territorial-elicited aggression in male long-evans rats.
mesh_terms: D000367:Age Factors; D000374:Aggression; D000818:Animals; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D051381:Rats / Q000254:growth & development*; D012737:Sex Factors; D012919:Social Behavior; D013045:Species Specificity; D013731:Territoriality; D013739:Testosterone / Q000502:physiology; D014754:Violence
chemical_list: D013739:Testosterone