Convergent evidence from many species reveals the evolutionary origins of human
friendship. In horses, elephants, hyenas, dolphins, monkeys, and chimpanzees, some …

Highlights•Social monogamy has evolved independently in distant species.•Pair bonding
has been investigated most rigorously in prairie voles.•Pair bonding is regulated by …

Parental care is essential for the survival of mammals, yet the mechanisms underlying its
evolution remain largely unknown. Here we show that two sister species of mice …

The deer mouse (genus Peromyscus) is the most abundant mammal in North America, and it
occupies almost every type of terrestrial habitat. It is not surprising therefore that the natural …

Nonapeptide functions have been explored in a diverse literature that has burgeoned in
recent years, particularly in relation to affiliation, bonding and human social cognition …

Social interactions are central to most animals and have a fundamental impact upon the
phenotype of an individual. Social behavior (social interactions among conspecifics) …

Abstract Arginine-vasotocin (AVT)/arginine vasopressin (AVP) are members of the
AVP/oxytocin (OT) superfamily of peptides that are involved in the regulation of social …

The Parental Brain: Mechanisms, Development, and Evolution presents a comprehensive
analysis of how the brain regulates parental behavior in nonhuman animals and in humans …

Although behavioral neuroendocrinologists often discuss “sociality” as a unitary variable, the
term encompasses a wide diversity of behaviors that do not evolve in a linked fashion across …

Abstract Vasopressin–oxytocin (VP–OT) nonapeptides modulate numerous social and
stress-related behaviors, yet these peptides are made in multiple nuclei and brain regions …