Mama the chimp and Professor Jan van Hooff first met ... 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 both parties.

In the next scene, Vanilla jumps up and down and hugs another chimpanzee, identified as alpha male chimpanzee Dwight by Save the Chimps, before looking up at the sky with wide eyes. "Dwight ...