OSTEEN, Fla. — In a trend on social media, people are showing off the pet monkeys they own, often to generate revenue for their animals. Owners are often forced to give up their monkeys because they ...

In humans, personality similarity between partners can lead to better compatibility and well-being. Is the same true for ...

The U.S. Department of Agriculture said an animal research facility illegally shipped primates without proper health ...

In truth, it is not a paradox. The animals involved all seem perfectly eager participants in heterosexual behaviour, as well, so their reproduction is not compromised. It is, though, a puzzle—for ...

Dunn’s team analyzed the biological “budget” of these primates and found a direct negative correlation: males with large ...