The tadpole hatches in a few days to a week or more and will develop into a frog within two months to three years. During metamorphosis, the lungs develop, limbs appear, the tail is absorbed, and the mouth becomes typically froglike. In some Oriental species the eggs are deposited on land and the young hatch as froglets, not tadpoles. Many frogs can leap up to twenty times their body length. A frog named Santjie at a frog derby held in South Africa made the longest frog jump on record - 33' 5.5.
Frogs use their tongues to snatch up prey.
But, not all frogs have tongues. Tongueless frogs use their fingers to catch prey and stuff it into their mouths. Frogs' ears, called tympana, look like two flat circles behind the eyes. In some frogs, the tympana are very small and difficult to see. The size of the tympana and the distance between them determine which sounds a frog will hear best.