Long‐term studies on large felids are rare and yet they yield data essential to understanding
the behaviour of species and the factors that facilitate their conservation. We used the most …

To exploit ecological niches where constraints have favoured selection for group living and
cooperation, both vertebrates and invertebrates have evolved elaborate social systems. In …

Avoidance of incestuous matings is widely reported across many animal taxa, and the
adaptive value of such behavior is explained through inbreeding depression. However, an …

In many animal societies, dominant individuals monopolize reproduction, but the tactics they
employ to achieve this are poorly understood. One possibility is that aggressive dominants …

We present results of a 10-year study of free-ranging gray-footed chacma baboons (Papio
ursinus griseipes) in the Okavango Delta of Botswana. The majority of deaths among adult …

Why females of some species cease ovulation prior to the end of their natural lifespan is a
long-standing evolutionary puzzle [1–4]. The fitness benefits of post-reproductive helping …

In cooperatively breeding birds, where helpers of both sexes assist with the provisioning and
upbringing of offspring who are not their own, males tend to contribute more than females to …

Cooperative behavior is a hallmark of the primate order. Cooperation is therefore an area of
intensive theoretical research in biology, anthropology, political sciences and economics, as …

The associations between social status and endogenous testosterone and corticosterone
have been well-studied across taxa, including rodents. Dominant social status is typically …

Measurement of reproductive skew in social groups is fundamental to understanding the
evolution and maintenance of sociality, as it determines the immediate fitness benefits to …