Amphibion

Amphibion

The word amphibian means “two-lives”. They are called amphibians because they spend their lives in the water and on land. This is an interesting property of them. While most of them transform from aquatic larvae to terrestrial adults, some amphibians, such as the golden alpine salamander, live permanently on land, while others, such as the axolotl, never leave the water. Amphibians are cold-blooded animals. They cannot generate their own body heat. Their body temperatures changes with their environment. It means that in cold environments, their body temperature is cold and in hot environments, their body temperature is warm. Amphibians include frogs, toads, newts, salamanders and caecilians.

Amphibians belong to the class of vertebrates. Vertebrates are those animals who have backbones in their bodies. They play important part in sustaining the balance of nature by acting both as prey and predator. They feed on insects, this way they help agriculture around the world.

There are over 7400 species of Amphibians known to man. They have inhabited all the continents except Antarctica. They live in deserts, rainforests, rivers and streams but their existence is in danger. It is believed that half of the world’s 7400 species could become extinct within next 50 years. It is an alarming situation. There are 2,000 to 3,000 threatened amphibian species, many of which suffer from human’s ability to mitigate in the wild, such as habitat destruction and over-collection. Although Sadly, around 41 percent of amphibians are at risk of extinction.