“…Several sensory stimuli emitted by pups have been reported to regulate the maternal behavior of mothers. Ultrasonic calls by pups can modulate pup retrieving (Allin & Banks, 1972;Noirot, 1972;Smotherman, Bell, Starzec, Elias, & Zachman, 1974) and anogenital licking (Brouette-Lahlou, Vernet-Maury, & Vigouroux, 1992), and olfactory cues from pups are involved in the induction of anogenital licking (Brouette-Lahlou, Vernet-Maury, & Chanel, 1991) in rats and mice. Moreover, suckling stimulation of pups regulates various postures during nursing in rats (Stern, 1996;Stern & Johnson, 1990;Stern & Keer, 2002).…”