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Why do toads have bumps and frogs don't?

Toads and frogs are both amphibians, and all amphibians need to keep moisture in their skin. Since toads usually live far away from water for most of their lives, they need a thick skin that holds moisture really well--this thick skin looks bumpy. Frogs don't need this thick, bumpy skin, since they always live near water. So, frog skin is smooth.

Tom F Ihde

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