A research team studied a group of apes as the animals were shown photos of old friends — some of which they hadn’t seen in over 25 years — and the animals' reactions to the photos.

But few groups or governments track ape seizures, making it difficult to know how serious a threat poaching for the live animal trade poses. Circumstantial evidence suggests the problem is ...

Chimpanzees are often cast as a mirror to our darkest tendencies, embodying violence, territoriality and power struggles. In contrast, bonobos are known as the most empathetic ape, heralded as the ...

Shigella is a bacteria that causes diarrhea, vomiting, cramps and dehydration. While more severe in apes, people also can get infected.

Kanzi showed apes have the capacity for language, but in recent years scientists have questioned the ethics of ape experiments.

A fourth ape has died from a shigella infection that has been plaguing animals at the Jacksonville Zoo and Gardens for weeks, the Florida zoo announced on Facebook this week. Kevin, a 3-year-old ...

His communication skills blurred the line between human and animal cognition, prompting debates on whether apes could possess elements of true language. In addition to his linguistic prowess ...