The Sunda clouded leopard [Neofelis diardi], 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 [Asian Clouded Leopard]. 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.
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.