The most famous rhino in the world has died, leaving behind two aging females and a hole in our world.

African elephant populations have already fallen from 26 million to 350,000. Is extinction next?

A new study finds that the often-feared big cats actually help keep crops and domesticated animals safe from other threats.

The subspecies has now been removed from the Endangered Species Act, 80 years after its last sighting.

Panda habitats remain heavily fractured, while new research shows breeding centers expose the endangered animals to a hidden yet potentially deadly threat.

Drilling in the refuge was tucked into in last month’s Republican tax bill, defying decades of attempts to protect this pristine wildnerness.

Stories about Bears Ears, sharks, vaquitas, an extinct bat and the Endangered Species Act resonated with our readers this year.

Only 35 Mount Graham squirrels remain in the wild, but five captive squirrels could hold the key to their long-term survival — if we can get them to breed.

A challenge from the reporter who blew the lid off of Thailand’s Tiger Temple and exposed illegal wildlife trafficking from a Buddhist monastery.

The trouble is, almost all animal populations today are facing increasing stress from changing environments.