Sunda Clouded Leopard
Sunda Clouded Leopard





The Sunda Clouded Leopard, also known as the Sundaland Clouded Leopard, is a medium-sized wild cat found in Borneo and Sumatra. In 2006, it was classified as a separate species, distinct from its continental relative Neofelis nebulosa.

In 2008, the IUCN classified the species as vulnerable, with a total effective population size suspected to be fewer than 10,000 mature individuals, and a decreasing population trend.

Previously, the species was known as the Bornean Clouded Leopard — a name publicised by the WWF in March 2007, quoting 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".


The Sunda clouded leopard is the largest felid in Borneo, and has a stocky build, weighing around 12 to 25 kg (26 to 55 lb). The canine teeth are two inches long, which, in proportion to the skull length, are longer than those of any other extant feline. Its tail can grow to be as long as its body, aiding balance.

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).


The Sunda clouded leopard is probably restricted to Borneo and Sumatra. In Borneo, they occur in lowland rainforest, and at lower density, in logged forest. Records in Borneo are below 1,500 m (4,900 ft). In Sumatra, they appear to be more abundant in hilly, montane areas. It is unknown if there are still Sunda clouded leopards on the small Batu Islands close to Sumatra.