They allow the frog to grasp stems and hold onto food. A female lays her eggs on the underside of a leaf overhanging a pool of water. Because frog eggs don't have shells, the female covers them with a layer of jelly that looks like foam. About six days later, tiny babies hatch and drop into the water below. These babies, called tadpoles, have round bodies, long tails, and no legs.
Frogs are amphibians.
That means they spend part of their lives in the water, and part on land. It also means that they go from tadpole to frog through a series of changes called metamorphosis. Tadpoles breathe through gills like a fish. They swim around in the water and eat tiny plants and bacteria. After a few weeks their hind legs develope.