The Tulsa Zoo's animal family is about to get a little bit bigger after the announcement that a 12-year-old chimpanzee is ...

Footage of a controversial 1930s experiment revealed the differences between a nine-month-old baby and a chimpanzee in ...

Tulsa Zoo said chimpanzee gestation is around eight months. The father is believed to be either alpha male Bernsen or Enloe.

Back in the 1930s, a human baby - aged just 10 months old - was forced to grow-up alongside a chimpanzee named Gua.

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

It is almost 93 years since the experiment was abruptly terminated in the early part of 1932 - and below we take a closer ...

The same is true of Beryl, a chimpanzee living in Kibale National Park, in Uganda, and her young daughter, Lindsay. When ...