Small White pig Small White pig The Small White or Small Yorkshire was a breed of domestic pig originating in the United Kingdom and which was common during the nineteenth century. It is now extinct, but its characteristics were used in producing the Middle White and other breeds. The Small White was developed in the early nineteenth century by cross-breeding the traditional Old Yorkshire, a large white pig, with imported Chinese pigs. This created a small animal with a pure white ground colour, pricked ears, the short, wide head of the Chinese breeds and their characteristic short upturned snout. In common with the
Chester Zoo and 155 were classified as threatened species. 134 species were kept as part of a managed captive breeding programme. The zoo manages the studbooks for Congo buffalo, jaguar, blue-eyed cockatoo, Madagascan tree boa, gemsbok (all ESB species), black rhinoceros, Ecuadorian amazon parrot, Mindanao writhe-billed hornbill, Sumatran Tiger and Rodrigues flying fox (all EEP species). In addition, Chester holds 265 threatened plant species. At the end of 2015, Chester zoo became the first zoo outside of New Zealand to breed the tuatara. The zoo opened "Islands at Chester Zoo" in July 2015, a project extending the footprint of the zoo by