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Amphibians!

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Amphibians [ăm-'fĭb-ē-ənz]
Animals that can live both on land and in water.

Idaho is home to 14 different species of amphibians. Amphibians were the first land vertebrates and were once the dominate vertebrates on Earth. Amphibian means "double life" and refers to the fact that these animals need both water and land during their life cycle. They start life in the water and wind up on land as adults. There are five different kinds of amphibians: toads, salamanders, newts, caecilians, and the most common one, frogs. You can find amphibians all over the world except in Greenland and Antarctica.

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