What are Amphibians ?

Amphibians are cold-blooded animals that have a double life such as frogs, caecilians, and salamanders. Most Amphibians begin in water as a jelly-covered eggs undergo metamorphosis from a juvenile water-breathing form to an adult air-breathing form that breathe by lungs and walk on the land, but some are paedomorphs that retain the juvenile water-breathing form throughout life.

	The biggest amphibian are the the giant salamanders of the eastern Asia, espically China and Japan. They grow up into 1.5 m in length.
The eggs grow in and become comma-shaped, then hatch into larval amphibians- tadpoles. These have feathery gills ont he sides of the head for absorbing oxygen frm water. When the grow up the lose their gills and take oxygen through lungs		The Axolotl is a strange salamander that keeps the gills even when adult . Larvae of this species fail to undergo metamorphosis, so the adults remain aquatic and gilled
	Caecilians have no legs. They live undeground, feeding on grubs and worms. They have small scales like reptiles and are eyeless and find their prey by touch and smell.