Chimpanzees

The research builds on the discovery that chimps seek out and eat certain plants to self-medicate.

Durham University finds that chimpanzees are as likely to console as the 'more empathic' bonobo.

Tombe, aged 28, was born at Colchester Zoo and moved last month as part of a conservation programme.

The Monkey World Ape Rescue Centre in Wareham, Dorset, welcomes Chocolat.

Boris had been at the zoo since 1969, having been rescued from a pet shop window in New York.

Qafzeh needed surgery, but the zoo said it was important to reintroduce him to the group to maintain social bonds.

Staff tried to intervene to separate the primates but they were unable to save 31-year-old Rene.

Wild chimpanzees seek out medicinal plants to eat when they are sick or injured, a study says.