Environmental Education for Kids
Eek!: Amphibians
Amphibians are cold-blooded, smooth-skinned vertebrates. Most live some of their life in water and some on land. The most common amphibian critter is a frog but there are many others. Read about Wisconsin's many amphibians here.
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Minnesota Pollution Control Agency: Frogs of Minnesota
An informative resource that contains a number of "Did You Know" frog facts. You can click on a number of frogs and hear their sounds.