The smallest monkey ever seen.

  The pygmy marmoset is known to be the smallest known species of  monkey in the world. The pygmy marmoset averages height is  about 15cm tall, with a 20cm long tail behind it. The pygmy marmoset has sharp claws which make the pygmy marmoset excellent at climbing trees and its long tail gives this little monkey fantastic balance when jumping between tree branches. The low weight of the monkey allows the pygmy marmoset to reach the extreme tree tops, a place where many of the larger species of  monkey cannot reach. The pygmy marmoset has been increasingly popular as an exotic pet, but they are very hard to keep. When a baby pygmy marmoset is taken away from the family it can often die quickly due to depression.