Skip to content
A depressed male chimpanzee lays his head on his arm. In "How Animals Grieve," Barbara J. King writes about how chimpanzees and other nonhuman animals' emotional and social lives.

Travis, Tragedy and the Other Chimpanzees

Orca Family Cares for Disabled Calf

Why You Lie Like an Ape

Chimpanzee Conducts 3-Year Study on Primates

Why “Animal Rights” Is a Contradiction in Terms

The Nature of Dolphins

Time to Pack the Trunk for Elephants

Animal rights: It’s Not an Either/Or Proposition

A still shot from the film Blackfish

Thoughts on the hearing in PETA’s SeaWorld slavery lawsuit

A still shot from the film Blackfish

Further reflections on PETA’s Seaworld slavery lawsuit

Sign up to receive the latest updates on our mission

Find out about opportunities to get involved, breaking news in our cases and campaigns, and more.