Amphibians mean living a double life ( this comes from greek ) . most of the amphibians sped their earlty life in water and the second part in land .Most of the amphibians are neither strong nor quick.
poison dart frogs , tree frogs and green frogs | Disney Princess and the frog | Frogs and toads with pictures
frogs can move fairly fast. The large majority are protected mainly by their retiring habits and their colouring. In addition, practically all amphibians ( including some frogs ) are able to secrete poison in their skin glands, which is their best defence against enemies.
In adult life, most amphibians usually have lungs, but they also breathe through their skin. Amphibians are usually found only in hot and temperate climates. They generally cannot live in salt water.
Although typical adult amphibians live on land, they return to the water for the mating season. There the eggs are laid and fertilized, and there the young pass the first part of their lives as fishlike larvae, feeding mostly on vegetable material.
A few amphibians have developed strange methods of taking care of their eggs. The female of a certain Brazilian tree frog builds a nest of mud for her eggs while the male frog sits by and croaks. The Surinam toad hatches her eggs on her back. Amphibians that leave their eggs unprotected in the water usually lay hundreds at a time, joined in bands or masses by a gluey substance. Those that take care of their eggs lay fewer of them.
