Raise you hand if you have seen frog eggs. The eggs hatch into the next stage, larva, or tadpoles. The tadpoles are shaped similar to fish, and have gills and a tail. They eat small plants in the water. As they grow, the young frogs change their shape and size several times.
Legs begin to form.
Their tails get shorter and front arms are seen. Their lungs grow. The frogs can breathe air and leave the water. They can eat insects because they have teeth. Now they are adult frogs.