Monkeys are a very common animal in the rainforest. Most live their lives up in the canopy and the understory. They have long arms to swing from branch to branch, and some use their tails to hold onto the trees while they eat. They are fast and agile, jumping easily from tree to tree for food. Different monkeys eat different things. They can eat nuts, flowers, roots, and frogs. Their hoots and howls are heard throughout the rainforest, even when they cannot be seen among the trees.