The northern pig-tailed macaque[1] (Macaca leonina) is a macaque species in the Cercopithecidae family.
- As its name suggests, the northern Pig-tailed macaque is distinguished by a rather stubby tail, reaching only 9 inches (23 cm) in length, which is often held coiled like a ponytail.
- Another distinctive feature is the patch of dark fur on its head, something it shares with its close relative, the southern pig-tailed macaque.
- To distinguish the two species apart, look closely at the face; you can see that the northern species appears to have mascara on dark lines running diagonally from the outer corners of the eyes.