Zoo exhibits where visitors enter enclosures of non-aggressive species, such as lemurs, marmosets, birds, lizards, and turtles. Visitors are asked to keep to paths and avoid showing or eating foods that the animals might snatch. Some zoos keep animals in larger, outdoor enclosures, confining them with moats and fences, rather than in cages. Safari parks, also known as zoo parks and lion farms, allow visitors to drive through them and come in close proximity to the animals. Sometimes, visitors are able to feed animals through the car windows. The first safari park was Whipsnade Park in Bedfordshire, England, opened by the
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