The Bornean Clouded Leopard or Diard's Leopard (Neofelis diardi) is a medium-sized wild cat found on Borneo, Sumatra and the Batu Islands in the Malay Archipelago and publicised under the name Bornean Clouded Leopard by the World Wide Fund for Nature (WWF) on March 14, 2007. Its coat is marked with irregularly-shaped, dark-edged ovals which are said to be shaped like clouds, hence its common name. Though scientists have known of its existence since the early 19th century, it was positively identified as being a distinct species in its own right in 2006, having long been believed to be a subspecies of the mainland Clouded Leopard (Neofelis nebulosa). WWF quoted Dr. Stephen O'Brien of the U.S. National Cancer Institute as saying, "Genetic research results clearly indicate that the clouded leopard of Borneo should be considered a separate species". .