The Monk Saki, Pithecia monhachus, is a species of saki monkey, a type of New World monkey. It is from South America. It is found in Brazil, Colombia, Ecuador and Peru. It can grow up to be 14.57 to 18.9 inches (37 to 48 cm) long and weigh about 3.3 to 6.61 lbs (1.5 to 3 kilograms). The tail can be up to 15.75 to 19.68 inches (40 or 50 centimeters) long. It usually lives in groups of three of four, in the canopy, and is very shy. The Monk Saki is very shy.] It has coarse fur, and was almost hunted to extinction in the late 1900’s.