Tadpole
How fast or slow the eggs hatch and how fast or slow the tadpole becomes a froglet is different in different frogs.  Some tadpoles take months to become frogs.  Some stay tadpoles all winter and do not become frogs until the next spring, or even three years later. Some frogs lay their eggs in bodies of water that are only there in the spring and dry up in the summer, so the tadpoles must become frogs in only a few weeks.