From egg, to tadpole, to froglet, to frog

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From egg, to tadpole, to froglet, to frog how
a frog grows and changes.
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Click on the pictures to learn more!
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• The female frog lays her eggs in the water. They
  become surrounded by a jelly-like covering, which
  protects the eggs.

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• After about 21 days, a tadpole wriggles out of
  each egg and attaches itself to a weed in the
  water. It has a long tail and no legs.

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• The tadpole grows. It does not have lungs. It
  has gills.

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• In about 5 weeks the tadpole will start to grow
  legs and get lungs. It will need lungs when it
  swims to the surface for air.

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• The tadpole is now called a froglet. The legs
  grow and the tail becomes smaller. In 12 weeks it
  will not have a tail. The froglet will be a frog.

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• Eleven weeks after the egg was laid, the frog is
  an adult. This frog will live mostly on land,
  with occasional swims. The female lays the eggs,
  the male fertilizes them, and the whole process
  begins again.