Zoo Zoo (Wildlife Conservation Society) leading the discussion. From then on, zoo professionals became increasingly aware of the need to engage themselves in conservation programs, and the American Zoo Association soon said that conservation was its highest priority. In order to stress conservation issues, many large zoos stopped the practice of having animals perform tricks for visitors. The Detroit Zoo, for example, stopped its elephant show in 1969, and its chimpanzee show in 1983, acknowledging that the trainers had probably abused the animals to get them to perform. Whipsnade Park in Bedfordshire, England, was opened in 1931 as the first safari
London Zoo an idea inspired by Hamburg Zoo, and led to newer designs to many of the buildings. Mitchell also envisaged a new park to the north of London, and in 1926 Hall Farm, near to Whipsnade village, was bought. In 1931, Whipsnade Wild Animal Park opened, becoming the world's first open zoological park. The first woman to be a curator at the London Zoo was Evelyn Cheesman, in 1920. In 1962, 'Caroline', an Arabian oryx, was lent to Phoenix Zoo, Arizona in the world's first international co-operative breeding programme. Today, the zoo participates in breeding programmes for over 130 species. At