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| Zookeeper John Wilkie has a cigarette break with a caged monkey and its stuffed companion. (Photo by Fox Photos/Getty Images). December 1928 |
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| A pet baboon on board the Friendship. (Photo by Fox Photos/Getty Images). 3rd June 1929 |
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| A little girl with a ribbon in her hair cuddles a monkey. (Photo by General Photographic Agency/Getty Images). Circa 1930 |
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| Fully dressed chimpanzees sit on chairs and kiss. (Photo by General Photographic Agency/Getty Images). Circa 1930 |
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| A keeper takes three chimpanzees for a walk on leads at London Zoo. (Photo by Fox Photos/Getty Images). 13th May 1931 |
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| Bella the chimpanzee from Whipsnade Zoo gets behind the wheel. (Photo by Fox Photos/Getty Images). 10th August 1933 |
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| A little girl and her pet monkey play on the “Sea Salter” beach in Kent. The monkey decided it was time to become “King of the Castle”. (Photo by Fox Photos/Getty Images). 2nd July 1938 |
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| A close-up of a young chimp holding a bird. (Photo by Hulton Archive/Getty Images). Circa 1955 |
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| Joe the chimpanzee preparing for the football season. (Photo by Monty Fresco/Topical Press Agency/Getty Images). 19th August 1955 |
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| A chimpanzee, called Chee-Chee, at the wheel. (Photo by Hulton Archive/Getty Images). Circa 1950 |
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| Members of the Malayan Police Band Bachan Singh and Abdul Rahman due to appear at the Royal Tournament visit London Zoo and make friends with Anabella the Orang-Outang. (Photo by William Vanderson/Fox Photos/Getty Images). 30th June 1956 |
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| Twelve-year-old Joan Moore with stuffed monkeys at Edward Gerrard's, the taxidermists. (Photo by Fox Photos/Getty Images). 20th August 1958 |
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| A little rhesus monkey who lives at Whipsnade Zoo and is called 'Susie' is having a bath while holding the hand of her keeper who is gently pouring water over her. (Photo by Fox Photos/Getty Images). August 1959 |
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| A chimpanzee at London Zoo starts drinking before a zookeeper has finished pouring during practice for the Chimps Tea Party. (Photo by Harry Todd/Fox Photos/Getty Images). 31st May 1965 |
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| Dr. Vera Gatch holding Mae, a baby chimpanzee. (Photo by Harry Benson/Express/Getty Images). 11th January 1966 |
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| The chimps at London Zoo rehearse their parts in front of the press for the Tea Parties to be held at London Zoo. (Photo by Keystone/Getty Images). 30th May 1968 |
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| Ripple, a baby baboon born at London zoo on 7th May, 1971, with a keeper. (Photo by Central Press/Getty Images). 23rd June 1971 |
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| A tiger cub has a short chat with a chimp. (Photo by Ian Tyas/Keystone Features/Getty Images). 27th November 1979 |
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| British prime minister Margaret Thatcher (right) holding a chimpanzee. (Photo by Keystone/Getty Images). 1985 |
