林牛，别名柬埔寨野牛、高棉牛、考布利牛、灰牛等。林牛和爪哇野牛一样怕生，在1937年才被发现。原本认为是瘤牛和爪哇野牛的杂交。

林牛体型巨大，体长达220 - 240 厘米，体重达900千克。身材较高但比较狭窄。体毛大都是棕褐色，老年雄性黑色。

A kouprey (Bos sauveli, from Khmer:គោព្រៃ, Khmer pronunciation: [koː prɨj], "wild ox"; also known as kouproh, "grey ox"), is a wild, forest-dwelling bovine species found mainly in northern Cambodia and believed to exist in southern Laos, western Vietnam, and eastern Thailand. A young male was sent to the Vincennes Zoo in 1937 where it was described by the French zoologist Achille Urbain and was declared the holotype. The kouprey has a tall, narrow body, long legs, a humped back and long horns.