Amphibians - Animals of the Class Amphibia

Amphibians, the most known are frogs, toads, salamanders they are not reptiles. In fact amphibians existed before the reptiles. They are amphibious, they can thus live in the water and on the land, but there are exceptions. Amphibians, the most known are frogs, toads, salamanders they are not reptiles. In fact amphibians existed before the reptiles. They are amphibious, they can thus live in the water and on the land, but there are exceptions.

One of the differences between amphibians and reptiles is the skin and the absence of claws on the amphibian. The skin of the reptiles is made of scales, but the skin of a amphibian is smooth. Amphibians have a permeable skin which allows to pass liquids and air, they thus need a wet environment not too dry. Given that they inhale and exchange easily liquids by the skin, they are more affected by the pollution.

For their reproduction, the majority of amphibians lay their eggs in the water. Eggs are gelatinous but have no shell as that of the reptiles and cannot withstand the pressures of an earthen environment unless it is very wet.

Amphibians can ovipares beings, viviparous animals and ovoviviparous what means that some spawn, some give youngs formed well or they can have youngs formed in an envelope a little as an egg. The majority undergo important metamorphoses, as the tadpole, and the others more minor.

An amphibian is a cold-blooded animal, it is thus influenced by the temperature and its slow metabolism when it becomes colder. Frogs often spend the winter under a rock or a dead branch, its very slow metabolism then resumes its activities when the spring comes.

Amphibians feed on insects and the other animals smaller than them. Some have a very long tongue which they use to catch their prey of a good distance.