Social complexity has been one of the recent emerging topics in the study of animal and
human societies, but the concept remains both poorly defined and understood. In this paper …

Females of some Old World primate taxa advertise their sexual receptivity with exaggerated
sexual swellings. Although a number of hypotheses have been proposed, the function of this …

Animals lead rich social lives. They care for one another, compete for resources, and mate.
Within a society, social relationships may be simple or complex and usually vary …

Social integration and support can have profound effects on human survival. The extent of
this phenomenon in non-human animals is largely unknown, but such knowledge is …

Published fifty years after the discovery of the double helix of DNA, this book chronicles a
revolution in our understanding of genes. The author recounts the hundred years' war …

We review evolutionary processes and mechanisms that gave rise to the diversity of primate
social systems. We define social organization, social structure and mating system as distinct …

In many mammals, females form close social bonds with members of their group, usually
between kin. Studies of social bonds and their fitness benefits have not been investigated …

Cooking is a human universal that must have had widespread effects on the nutrition,
ecology, and social relationships of the species that invented it. The location and timing of its …

Comparison is fundamental to evolutionary anthropology. When scientists study
chimpanzee cognition, for example, they compare chimp performance on cognitive tasks to …

Famed in story as" the great leviathans," sperm whales are truly creatures of extremes.
Giants among all whales, they also have the largest brains of any creature on Earth. Males …