Kouprey

The kouprey, also known as the forest ox and grey ox, is a possibly extinct species of forest-dwelling wild bovine native to Southeast Asia. It was first scientifically described in 1937. The name kouprey is derived from the Khmer language and means 'forest ox', and it was defined as the national mammal of Cambodia in 2005. The last confirmed sighting of a wild individual took place in 1969 (Wikipedia, general species account).

It has a light and gracile build compared with other wild cattle, and both sexes have notched nostrils. It is 2.1–2.2 m long from nose to rear, 1.7–1.9 m tall at the shoulders and weighs 700–900 kg. Calves are a reddish bay colour and turn grey at around five months, and horns start appearing at six months. Cows turn a mouse to brownish grey, while bulls become progressively darker, until individuals of 12 years or older are entirely dark brown.