title: Gender composition of the litter affects behavior of male mice.
mesh_terms: D000367:Age Factors; D000374:Aggression; D000818:Animals; D000831:Animals, Newborn; D001522:Behavior, Animal; D001835:Body Weight; D006801:Humans; D008297:Male; D008425:Maternal Behavior; D051379:Mice; D012723:Sex; D012919:Social Behavior; D012931:Social Environment; D014886:Weaning