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.

The birth of the chimpanzee was in front of astonished visitors, says Chester Zoo.

Sharing prams with monkeys and relaxing with the lions - the Clews family recall their wild upbringing.

Two of the animals were shot dead after leaving their enclosure and heading for a village school.