Costa Rica has many national parks with unusual animals. There is a large park in the mountains where you can see very rare green frogs, long snakes and colourful birds. In the south-west near the ocean you can see many spider monkeys swinging from the trees and running across the paths. Along the river banks in the west you can see large crocodiles soaking up the sun while their babies search for food in the water. Costa Rica is full of interesting natural sights.