The spider monkeys are a genus of primates from the family of the spider-tailed monkey.
The genus is divided into two types, the northern arachnid, and the southern arachnid.
They live in the forests of southeast Brazil.
In the past, its range stretched from the state of Bahia in the north to the state of Paraná in the south, but today its range is greatly reduced and fragmented.
The habitat of these animals is the coastal rainforests, where they occur up to 1600 meters above sea level.
Spider monkeys are the largest New World monkeys!
They reach a head-body length of 45 to 78 centimeters, plus a 65 to 80-centimeter long tail.
Males are 12 to 15 kilograms heavier than females, which reach 9.5 to 11 kilograms.
Their whole body is adapted to the tree-dwelling way of life, arms and legs are noticeably long and slender.
The thumb is small in the northern species, but it is present, in the southern species it is completely absent.
The tail, which is as long or longer than the body, is used as a prehensile tail.
As with the other spider-tailed monkeys, it is hairless on the underside of the tip, which allows for a better grip.
Spider monkeys are diurnal tree dwellers and prefer to stay in the upper crown area.
They are skilled climbers who often move suspensively – swinging by their arms or hanging by their tails – or on all fours.
If necessary, they come to the ground as well.
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