Class Amphibia

Amphibians include frogs, salamanders, toads, newts, and some less familiar animals, such as caecilians. All amphibians spend at least part of their life underwater, if not all of it, such as frogs, which in their larvae stage, as a tadpole, cannot exit the water. Many Amphibians also have gills at some point in their life, but many lose them after their larvae stages.