Researchers observed intense violence between two formerly friendly sets of chimpanzees in Uganda. The findings may have ...

Hares 'box' each other when a female is 'fighting off unwanted attention' from a male - but in this instance the male had a ...

"I've known many of them for their entire lives. And now I'm watching them kill each other," says one researcher.

The first well-observed "civil war" in wild chimpanzees reveals that shifting social ties alone can fracture a group, ...

A long-running conflict in a Ugandan park may provide clues to the origins of human warfare, and how to avoid it.

An animal rescue owner at the center of a massive seizure, which officials say is the largest dog and cat case in Los Angeles County history and may be among the largest hoarding cases in the U.S., ...

A Gainesville man was arrested Wednesday after law enforcement discovered 12 mistreated dogs in his backyard, according to a Gainesville Police Department arrest report. GPD officers assisted Alachua ...

For voters who care about animal welfare and stopping cruelty to animals, Rep. Raja Krishnamoorthi is the clear choice in the Democratic primary for U.S. Senate in Illinois. During his five terms in ...

A judge denied a motion to dismiss animal cruelty charges against a mother and daughter accused of leaving their two young dogs to die inside a hot car in Bridgewater last July. Lisa Smith, 59, and ...

A Hacienda Heights man was arrested for allegedly running a dog-fighting ring and the illegal possession of firearms. Raymond Nunez, 53, is accused of illegally exhibiting, breeding and training dogs ...

Add Yahoo as a preferred source to see more of our stories on Google. Two cockerel fighting. (Photo by Getty Images) For years, animal advocates have warned that organizers of animal fights are not ...

LOS ANGELES — A Hacienda Heights man was arrested Wednesday on federal charges alleging he hosted dog fights and illegally bred, trained and exhibited animals for use in the venture. Raymond Nunez, 53 ...