Maternal behavior in the virgin and lactating rat.
D000818:Animals; D000831:Animals, Newborn; D001522:Behavior, Animal; D005247:Feeding Behavior; D005260:Female; D006120:Grooming; D007774:Lactation; D008425:Maternal Behavior; D009425:Nesting Behavior; D010298:Parity; D011247:Pregnancy; D051381:Rats; D012903:Smell; D013997:Time Factors