This is a very well-known video and you can see why. The female chimpanzee is dying of old age (she is 59). She died a week after this video was made.
An old friend, Jan van Hooff (Emeritus Professor of Behavioural Biology at Utrecht University and co-founder of the Burgers colony), who knew her from 1972, visited. You can see the reaction. Her mood picked up tremendously. There is a huge amount of warmth between the two. A love, if we are honest.
She still looks fatigued and ill but smiled at him and they touched. They greeted in the chimpanzee way. It is incredibly moving.