What do spider monkey look like?

Spider monkeys have long, slender bodies with prehensile tails that are as long as their bodies. They can use their tail as an extra hand to swing and grab objects. They have large, round heads with big, expressive eyes. Their fur is usually black, brown, or gray. Spider monkeys usually reach 25-39 inches in length, not counting their tails, which can be as long as 36 inches. They generally weigh 11 to 23 pounds, with females being slightly smaller and lighter than males.