The problem of comparison in comparative psychology.
D000220:Adaptation, Biological; D000374:Aggression; D000818:Animals; D001522:Behavior, Animal; D005075:Biological Evolution; D002415:Cats; D004463:Ecology; D004777:Environment; D005260:Female; D005823:Genetics; D000882:Haplorhini; D006801:Humans; D007858:Learning; D008297:Male; D011587:Psychology, Comparative; D051381:Rats; D012107:Research Design; D012737:Sex Factors; D013045:Species Specificity; D009626:Terminology as Topic