What is special about Amphibians ?

In this family we find toads, frogs, salamanders, newts and caecilians. These animals evolved some 3.5 million years ago.
The name Amphibia refers to the fact that these animals pass through an immature stage during which they reach the adult stage. As adults they breathe with lungs and are able to live on land. The eggs of the amphibians are laid in the water. The young one which is hatched in a few days resembles a fish in body shape. It also breathes through gills. As it grows, limbs and lungs are developed slowly. As it's tail slowly shrinks, it leaves the water for the land. It is no longer herbivorous but feeds on worms and insects which it catches with its tongue.
The skin of the amphibian is smooth, soft and moist. The toad however, has dry, warty skin. Amphibians are cold blooded

creatures and therefore hibernate underground to protect themselves from extreme cold and heat. During hibernation, all their biological activities are slowed down considerably.