For a few fleeting weeks each winter, the famously elusive cats emerge from solitude, calling across the mountains in search of a mate.

Advocates want the state to dedicate $15 million a year to bring back specialists focused on resolving conflicts between people and wild animals. Will they get it?

The Southern California mountain lions are up for permanent protection from a state environmental agency. Will this help them from dying of disease, car strikes?

A mountain lion on the city sidewalk makes everyone reset their daily routines with a sudden rush, in particular, people ...

With the rapid melting of Arctic ice, the waters have opened up to more human traffic, which is disturbing the underwater ...

“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ...

Taylor was a frequent flyer when it came to crossing I-40, the upper boundary of the endangered species' recovery area.

Nature is full of surprises, but few are as fascinating as hybrid animals, creatures born from crossing two different species. Some hybrids occur naturally where habitats overlap, while others result ...

Discover 36 incredible monkey facts, from record-breaking howls to tail tricks and clever tool use. Fun, fascinating, and perfect for curious minds.

Of all the schemes that humans have devised to keep sea lions from gorging on the salmon of the Columbia River basin, none has worked for long. Local officials and researchers have chased sea lions ...

Jellyfish seem to sleep for about 8 hours a day, take midday naps and snooze more after a bad night’s sleep – just like us. Sleep is thought to have first evolved in marine creatures like these, and ...

The Larimer County Coroner’s Office has identified 46-year-old Kristen Marie Kovatch of Fort Collins as the victim of last week’s fatal mountain lion attack northeast of Estes Park. An autopsy ...