Why do we say frogs undergo metamorphosis?

   Metamorphosis is the change of shape during an animal’s life. In frogs, it refers to the change from the larval or tadpole stage, into an adult frog. Frogs and toads generally breed in the pond where they were born. The eggs – sometimes there are thousands of them – are laid in clumps called frog spawn. Hatching takes place about six days after fertilization, and the babies or larvae are called tadpoles.

            Tadpoles live like fish, and have a head, body, and tail. They live underwater, and breathe through gills. They feed on algae and tiny water plants. These lungs, and front legs too. They lose their tails, and begin to look like little frogs. By the time they are three months old, tadpoles have completed the process of metamorphosis. They are now adult frogs that are capable of breathing through their lungs, and living on land.