Many of the rainforest's birds, reptiles, amphibians and mammals are endangered. These include familiar animals, such as the chimpanzees of Central Africa, and relatively unknown animals, such as the elephant frog of Aus...
The African elephant is the animal with the largest teeth. An African elephant has two modified incisors, called tusks, and four molars. Each tusk measures up to 8 feet long and weighs up to 100 pounds or more.