Amphibians

1. The difference between frogs and toads is that frogs are smooth and toads tend to have much bumpier skin.

2. Amphibians were the first four-limbed vertebrates.

3. Their skin is protected by a layer of mucus.

4. Amphibians breath through their skin.

5. More than 75% of all toads and frogs live in the tropical rain forests.

Amphibians live most of their lives in the water. They have to be moist at all times so the quality of the water they live in is incredibly important.