BACKGROUND Whereas early studies of animal evolution focused principally on the
adaptations of different species to their physical environment, more recent studies have …

Despite the diversity of animal welfare definitions, most recognise the centrality of the
feelings of animals which are currently impossible to measure directly. As a result, animal …

While it is commonly believed that animals live longer in zoos than in the wild, this
assumption has rarely been tested. We compared four survival metrics (longevity, baseline …

Abstract “Monogamy” and pair bonding have long been of interest to anthropologists and
primatologists. Their study contributes to our knowledge of human evolutionary biology and …

Behavioral ecologists, evolutionary biologists, and anthropologists have been long
fascinated by the existence of “monogamy” in the animal kingdom. Multiple studies have …

While often placed in opposition to one another, integrating data from studies of captive and
non-captive nonhuman primates enhances our interpretation of their natural behavior and …

Life span and aging are substantially modified by natural selection. Across species, higher
extrinsic (environmentally related) mortality (and hence shorter life expectancy) selects for …

Broadening our knowledge of olfactory communication in strictly monogamous systems can
inform our understanding of how chemosignals may facilitate social and reproductive …

The extended female postreproductive life span found in humans and some toothed whales
remains an evolutionary puzzle. Theory predicts demographic patterns resulting in …

This paper is the introduction to a special issue on “'Monogamy'in Primates: Variability,
Trends, and Synthesis.” The term “monogamy” has undergone redefinition over the years …