The word "amphibian" means two lives,one in water an done on land.So,amphibians can live both in water and on land
An amphibian is a cold-blooded vertebrate animal that is born in water and breathes with gills. As the larva grows into its adult form, the animal's lungs develop the ability to breathe air, and the animal can live on land. Frogs, toads, and salamanders are all amphibians.
The word amphibian comes from the Greek word amphibios, which means to live a double life. The noun amphibian has its roots in the words amphi, meaning of both kinds, and bios, meaning life. The word is used for the class of animals that spend part of their lives in water and part on land. The word can also be used as an adjective to describe the animals that lives this way. You might be interested to know that the largest amphibian weighs about 140 pounds and the smallest weighs only a few grams.