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 …

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 …

A group of proboscis monkeys (Nasalis larvatus) consisting of an alpha‐male, six adult
females, and several immatures was observed from May 2005–2006. We collected over …

Among primates that form multilevel societies, understanding factors and mechanisms
associated with the movement of individuals between groups, clans, and one‐male social …

A one-male group (BE-Group) of proboscis monkeys was studied along the Menanggul
River, a tributary of the Kinabatangan River, Sabah, Malaysia, from May 2005 to 2006. It has …

Although foregut fermentation is often equated with rumination in the literature, functional
ruminants (ruminants, camelids) differ fundamentally from non-ruminant foregut fermenters …

In mammalian herbivores, faecal particle size indicates chewing efficiency. Proboscis
monkeys (Nasalis larvatus) are foregut fermenters in which regurgitation and remastication …

Systematic and well‐structured monitoring is essential for taxa with high extinction risk such
as primates. Endangered proboscis monkeys Nasalis larvatus are endemic to Borneo …

Male proboscis monkeys have uniquely enlarged noses that are prominent adornments,
which may have evolved through their sexually competitive harem group social system …

Objectives One‐male social systems are usually characterized by polygyny and
reproductive exclusion by a single resident male. Sometimes, however, secondary males …