Friendship comes with complex pros and cons -- possibly explaining why some individuals are less sociable, according to a new study of gorillas.
A new study comparing wild and zoo-housed Sumatran orangutans reveals that life in a zoo significantly alters how orangutans interact with their environment. Researchers analyzed over...
Wild chimpanzees have been pictured eating and sharing fruit containing alcohol.
It's a game a lot of us played as children -- and maybe even later in life: unspooling measuring tape to see how far it would...