Red Titi Monkey
Photo and caption by Sam Morris
A Titi hangs still in the rainforest searching for passing insects. Lots of monkeys move around using all four limbs, but red titi monkeys seem to have evolved to use their strong legs to move from branch to branch. They grip tightly as they go to prevent a fall and use their tails, which are not capable of grasping, for balance.
Location: Peruvian Amazon