title: Comparisons of canid and felid social systems from an evolutionary perspective.
mesh_terms: D000220:Adaptation, Biological; D000819:Animal Communication; D000818:Animals; D001070:Appetitive Behavior; D001307:Auditory Perception; D001522:Behavior, Animal; D005075:Biological Evolution; D002335:Carnivora / Q000033:anatomy & histology / Q000254:growth & development*; D002415:Cats; D002980:Climate; D004285:Dogs; D004777:Environment; D004971:Estrus; D005247:Feeding Behavior; D005260:Female; D005843:Geography; D008297:Male; D011247:Pregnancy; D012726:Sexual Behavior, Animal; D012903:Smell; D012919:Social Behavior; D013045:Species Specificity; D014796:Visual Perception