Social deprivation, housing density, and gregariousness in rats.
D000818:Animals; D001522:Behavior, Animal; D001835:Body Weight; D003672:Defecation; D005106:Exploratory Behavior; D007103:Immobilization; D008297:Male; D011156:Population Density; D012929:Psychological Distance; D051381:Rats; D012919:Social Behavior; D012934:Social Isolation; D013037:Spatial Behavior