Chilling photographs show inside a disturbing experiment involving a litlte boy and his "sister" chimp who were spun on ...

Astonished onlookers caught sight of a rare baby chimpanzee as it clings to his ... out by his mother as she goes about her daily tasks. Pictures and video show the tiny newborn being carefully ...

A rare baby chimpanzee clings to his adoring mother ... of the male was "vitally important for the future of the species." Pictures and video show the tiny newborn being carefully cradled by ...

A chilling experiment from the 1930s saw a baby being raised alongside a chimpanzee, with haunting images showing the child in tears after being spun around repeatedly. The study, which was ...