Some animals became very specialized. This means that they adapted to eating a specific plant or animal that few others eat. For example, parrots and toucans eat nuts, and developed big strong beaks to crack open the tough shells of Brazil nuts. Leafcutter ants climb tall trees and cut small pieces of leaves which they carry back to their nest.The leaf pieces they carry are about 50 times their weight.The ants bury the leaf pieces, and the combination of the leaves and the ants' saliva encourages the growth of a fungus, which is the only food these ants eat.Sometimes there are relationships between animals and plants that benefit both. Some trees depend on animals to spread the seeds of their fruit to distant parts of the forest. Birds and mammals eat the fruits, and travel some distance before the seeds pass through their digestive systems in another part of the forest.
ORGANSIMS !!
There are billions of species (kinds) of mammals, insects, birds and reptiles found in tropical rainforests. There are so many that there are many that have not been named or even identified yet.