Mama the chimp and Professor Jan van Hooff first met ... her despondent trance to greet her long lost companion with a smile and a hug. It’s easy to see the tender goodbye has an effect on ...

Yoko is in many ways more human than chimp. He uses a knife and fork, plays ball, watches television and makes artwork with ...

The video starts with the adorable chimp lying on the floor as one of his handlers tickles him. You can see he's enjoying it by the huge smile on his face. Make sure your sound is on so that you ...

A smile is not a smile - Experts fear Yoko may find it hard to adapt to life with other chimpanzees at Sorocaba in the Brazilian state of Sao Paolo -- the largest great ape sanctuary in Latin America.