Le tigre de Sumatra (Panthera tigris sumatrae) est une sous-espèce du tigre qui vit sur l'île indonésienne de Sumatra. Elle a été classifiée comme espèce en danger de disparition par l'UICN en 2008 alors que sa population était composée de 441 à 679 individus, avec des sous-populations d'au maximum 50 individus, la tendance étant à la baisse.
Le tigre de Sumatra est l'unique survivant des tigres vivant sur les îles de la Sonde qui abritaient également les tigres de Bali et de Java, désormais éteints. Le séquençage de l'ADN du génome mitochondrial de 34 tigres soutient l'hypothèse selon laquelle les tigres de Sumatra se distinguent des populations présentes sur le continent.
Edinburgh Zoo, formally the Scottish National Zoological Park, is an 82-acre (33 ha) non-profit zoological park located in Edinburgh, the capital city of Scotland. The mission statement of Edinburgh Zoo is "To excite and inspire our visitors with the wonder of living animals, and so to promote the conservation of threatened species and habitats".
The land lies on the Corstorphine Hill, from which it provides extensive views of the city. Built in 1913, and owned by the Royal Zoological Society of Scotland, it receives over 600,000 visitors a year, which makes it Scotland's second most popular paid-for tourist attraction, after Edinburgh Castle. As well as catering to tourists and locals, the Zoo is involved in many scientific pursuits, such as captive breeding of endangered animals, researching into animal behaviour, and active participation in various conservation programs around the world.
Edinburgh Zoo was the first zoo in the world to house and to breed penguins. It is also the only zoo in Britain to house koalas and giant pandas. The zoo is a member of the British and Irish Association of Zoos and Aquariums (BIAZA), the European Association of Zoos and Aquaria (EAZA), the World Association of Zoos and Aquariums (WAZA), and the Association of Scottish Visitor Attractions. It has also been granted four stars by the Scottish Tourism Board. The zoo gardens boast one of the most diverse tree collections in the Lothians.