Amphibians are a class of animals that have lungs and gills, just like fish (like reptiles). Frogs and toads (Salientia), salamanders and newts (Caudata), and blindworms (caecilians) are the three subclasses of amphibians.
Most animals that love the water are frogs, belonging to the class of amphibians. Amphibians are a group of animals that number over 4,000.
The word "amphibian" means "both kinds of life" in Greek. This speaks to the special capacity of amphibious animals to exist both on land and in water. Certain mammals, like seals, can live both on land and in water, but they are not considered amphibians. Fish are not an amphibian, either, despite having gills.
Amphibians, like reptiles, are cold-blooded vertebrates that require the right environment to control their body temperature. Because toads and frogs deposit their eggs in water rather than on dry land, amphibians differ from reptiles in this regard. Because they lack scaly skin for self-defense, amphibians release toxins as a defensive mechanism.
In contrast to reptiles, which have skin that feels dry to the touch, amphibians can have skin that is sticky or slimy without any scales.
Examples:
