TORONTO—Animal Justice is calling for an end to cruel monkey experiments at York University following the release of new undercover footage showing the animals suffering inside a lab. The newly […] ...

Each year on April 24, scientists, advocates, and policymakers around the world mark World Day for Laboratory Animals—a ...

Aaron Sandel can pinpoint when it all started. The codirector of the Ngogo Chimpanzee Project had been observing a group of apes on June 24, 2015, in Uganda’s Kibale National Park, where the project ...

A 30-year study documents a rare split within a chimpanzee community in Uganda’s Kibale National Park — one that sparked a deadly war. Two rival chimp groups have staged coordinated raids that killed ...

Free Expression is a daily newsletter on American life, politics and culture from the Opinion pages of The Wall Street Journal. Sign up and start reading Free Expression today. Warfare is often ...

Two once-harmonious groups of chimpanzees in Uganda’s Kibale National Park suddenly became estranged and have spent the past eight years engaged in a bloody conflict, according to a study published ...

A rare and deadly “civil war” has broken out between two factions of chimps in Africa, according to new research. The dispute erupted in what was once a cohesive group of about 200 chimps whose ties ...

In the 1970s, the late Jane Goodall observed a community of chimpanzees in Gombe, Tanzania, breaking into two factions; the males in one group ended up killing all the males in the rival group over ...

The long-running conflict in a formerly unified community, the second ever observed, adds to Jane Goodall’s studies about a different chimp war in the 1970s. A chimpanzee community called Ngogo was ...

Researchers dubbed one experiment involving a roughly one-foot-tall crystal "The Monolith" in honor of Stanley Kubrick's iconic film 2001: A Space Odyssey. Aden Kahr Humans have long been fascinated ...