Humans exhibit major age-related shifts in social relationships along with changes in social
and emotional psychological processes that underpin these behavioural shifts. Does social …

Coalitions and alliances are ubiquitous in humans and many other mammals, being part of
the fabric of complex social systems. Field biologists and ethologists have accumulated a …

Male mammals often kill conspecific offspring. The benefits of such infanticide to males, and
its costs to females, probably vary across mammalian social and mating systems. We used …

В настоящее время во всем мире много говорят о кризисе маскулинности и о том, что
происходит с мужчинами. Слова о феминизации мужчин, ослаблении отцовства и т. п …

Highlights•We describe a novel paradigm to study the temporal dynamics of mouse
dominance hierarchies.•Mice reliably form significantly linear and stable dominance …

Conspicuous colored patches on animals often serve as sexually selected signals that
advertise male quality. Such colored traits facilitate assessment of risks associated with a …

Body size is a key determinant of male fighting ability and reproductive success in many
animal species, but relationships between these variables have only rarely been examined …

In most mammalian species, females regularly interact with kin, which is expected to reduce
aggressive competitive behaviour among females. It may thus be difficult to understand why …

We investigated relationships between fecal androgen concentrations, facial coloration and
behaviour in semi-free-ranging male mandrills. We found that fecal androgen levels were …

In primates that are highly sexually dimorphic, males often reach maturity later than females,
and young adult males do not show the size, morphology, and coloration of mature males …