Big cats you didn’t know, from BBC News: Island leopard deemed new species. Clouded leopards found on Sumatra and Borneo represent a new species, research by genetic scientists and the conservation group WWF indicates.
Supporting evidence came from examination of fur patterns. Leopards from Borneo and Sumatra have small “clouds” with many distinct spots within them, grey and dark fur, and twin stripes along their backs.
Their mainland cousins have large cloud markings on their skin with fewer, often faint, spots within the cloud markings, and are lighter and more tawny in colour.[...]
WWF, which maintains a large conservation operation on Borneo, estimates there are between 5,000 and 11,000 clouded leopards on the island, with a further 3,000 to 7,000 on Sumatra.