A chimpanzee female (Pan troglodytes schweinfurthii) sleeps in a nest built in a tree in Uganda's Kibale National Park. The ...

Just because a female olive baboon has mated with a specific male doesn't mean he will be the father of her offspring.

It was an Easter Sunday to remember for Big Bear bald eagles Jackie and Shadow, who welcomed a pair of eaglets this weekend ...

A rescued mountain lion cub, Crimson, is receiving care at the Oakland Zoo after being abandoned by its mother. While overall ...

From deep growls rolling over savannas to haunting whale songs drifting through the ocean, many species rely on sound to stay ...

Mountain lion sightings have been confirmed in both Merced and Gustine in recent days, raising awareness among residents and prompting questions about ...

Scientists found that the male’s hectocotylus, the specialized arm for mating, is lined with receptors that can sense ...

This article originally published at Mountain lion P-22, LA's 'dearly departed king,' readies for a grand return.

Ducks with corkscrew penises, fish changing sex – what do we really know about sex and reproduction on Earth? Less than we ...

Discover 15 animals that mate for life, showcasing unique behaviors, loyalty, and partnerships that last a lifetime in the ...

The state placed six mountain lion species on the threatened list, so road and land developers must evaluate projects to not isolate pumas.