Horse-tailed squirrel

The horse-tailed squirrel, Sundasciurus hippurus, is a species of rodent in the squirrel family Sciuridae. It lives throughout the islands of Borneo and Sumatra and the southern half of the Malay Peninsula, which takes in Brunei and Malaysia and parts of Indonesia and Thailand. A report of it from Vietnam in 1831 has not been repeated in later accounts of its range. It is the largest and most colourful of the Sundasciurus tree squirrels, a medium-sized squirrel with a head and body length of 21.5 to 25 cm and a tail of 24 to 29 cm. The head, shoulders, forefeet and body are grizzled grey, the underbelly is whitish, dull orange or red-brown, and the tail is commonly glossy black or grey banded with black, the feature behind its common name.