A frog starts life as a tiny egg in a pond. The eggs stick together in a soft, wobbly clump.
A small tadpole hatches from each egg. A tadpole has a long tail. It swims in the water and breathes with gills, just like a fish.
The tadpole eats and grows. Soon it grows back legs. Then it grows front legs. Its tail gets shorter and shorter.
At last, the tail is gone. Now it is a frog! The frog can hop on land and swim in the pond. It breathes air with its lungs. It catches flies with its long, sticky tongue.
One day, the frog may lay eggs of its own. Then the life cycle starts all over again.
