Amphibians lay their eggs in
water, and young amphibians tend to resemble small fish.
tadpole, or newborn frog, is born and lives in water. It
has a tail that allows it to swim like a fish. It also
has gills so that it can breathe under water. As the
tadpole grow into a frog, it loses its gills and tail,
and develops legs for moving on land. Most amphibians can
both walk and swim in water.
Depending on the species of amphibian, breathing can
take place in gills, lungs, the lining of the mouth, the
skin, or some combination of these.
Amphibians body temperature changes with its
environment. In cold climates, amphibians hibernate
during the winter.