The Przewalski horse (Equus ferus przewalskii) is a fairly massive horse of small stature. It is 3.9 to 4.5 ft (1.20 to 1.40 m) tall at the withers and about 5.2 ft (1.60 m) at the top of the head. Its length reaches about 6.5 ft (2 m), without the tail that is around 2.9 ft (90 cm). The horse's weight varies between 440 and 661 lbs (200-300 kg), depending on the individual.