A chimpanzee bottle-feeds a lamb at Southam Zoo Farm in Warwickshire. The owners of the zoo, Mr and Mrs Clews, bring up many of the animals as their pets; the animals, are, as a result, of a friendly disposition. (Photo by Fox Photos/Getty Images). 23rd August 1968

Baron, one of the chimpanzee stars of “Stop Press Girl” learns camerawork techniques from Arthur Lemming during a break in filming at Pinewood Studios, England. (Photo by Robert Hawkins/Hulton Archive/Getty Images). 1949

West African chimpanzees Conda and Kasper, two of the Brooke Bond television chimps borrowed from Billy Smart's Circus, at the Shepperton Film Studios in London. Animal trainer Klaus Kroplin oversees the set as Conda tells fortunes in her role as Madame Zodiac and Kasper as a lonely blossom seeking romance. (Photo by Russell Knight/BIPs/Getty Images). February 1958

Molly Lamont, the South African actress who started her career in England and then went to work for Paramount, applies her make-up under a tree with the help of Jiggs, the chimpanzee, who is holding her mirror for her. They are on the set of the film 'The Jungle Princess', directed by Wilhelm Thiele for Paramount. (Photo by Margaret Chute/Getty Images). 1936

A monkey “playing” a toy piano on which is perched a thoughtful looking parrot. (Photo by Fox Photos/Getty Images). August 1927

Jacko and Bess, two mandrills who perform at the Olympia Circus in London, wearing a fancy suit and dress in imitation of a smart couple. (Photo by Fox Photos/Getty Images). 31st December 1931

Irish students at the University of Dublin entertaining on the city streets during Trinity College Rag Week. (Photo by Walshe/Topical Press Agency/Getty Images). June 1922

Actresses Barbara O'Neil (1909–1980) and Luise Rainer in their dressing room with Miss O'Neil's pet dog and Professor Pepi, a ring-tailed monkey. All except the dog appear in “The Toy Wife” (aka “Frou Frou”) directed by Richard Thorpe and produced by MGM. (Photo by Margaret Chute/Getty Images). 1938

Bongo, a west African lowland gorilla, watches the BBC test-card on a colour television in his new luxury enclosure at Twycross Zoo in Warwickshire. Bongo shares the accomodation with another gorilla called Joe. (Photo by Ian Showell/Keystone/Getty Images). 8th July 1971

Fi-Fi the monkey is separated from Bo-Bo at the zoo, to entertain a crowd at the opening of a Milk Bar. (Photo by Hulton Archive/Getty Images). Circa 1950

West African chimpanzee Conda, one of the Brooke Bond television chimps borrowed from Billy Smart's Circus, at the Shepperton Film Studios in London. Animal trainer Klaus Kroplin oversees the set as Conda fingers the measuring device used by Focus Puller Peter Hurst. (Photo by Russell Knight/BIPs/Getty Images). February 1958

Congo, the famously artistic London Zoo chimpanzee, explains one of his paintings to his handler Tony Fitzgerald at an exhibition at the Institute of Contemporary Arts which is being held in association with the Zoological Society of London, 14th September 1957. (Photo by Harry Todd/Fox Photos/Hulton Archive/Getty Images)

Members of the Bolshoi Ballet with Alexander the orang-utan during their visit to London Zoo, 26th October 1956. (Photo by William Vanderson/Fox Photos/Hulton Archive/Getty Images)