They also have fins to aid them swim, the same as fish. Later, their bodies modify, growing legs and lungs permitting them to live on the land. The term amphibian means two-lives, one on land and one in the water.
Salamanders: Salamanders look somewhat like lizards. They have short legs, skinny bodies and long tails. Salamanders can regrow lost limbs and other body parts. They such as wet, moist areas such as wetlands. A newt is a kind of salamander.
Frogs: Frogs are amphibians of the order anura. They usually have a webbed fingers, short body and toes, bulging eyes and no tail. Frogs are great jumpers with long powerful legs. Toads are a kind of frog. Two species of frogs are the American bullfrog and the poison dart frog.
Caecilians: Caecilians are amphibians that do not have arms or legs. They look a lot like worms or snakes. Many of them can be long and reach lengths of above 4 feet. They have a powerful skull plus a pointed nose to assist them burrow via mud and dirt.
The biggest amphibian is the Chinese Giant Salamander. It can grow to six feet long and weigh 140 pounds. The biggest frog is the Goliath Frog which can grow to 15 inches long (not counting the legs) and weigh over 8 pounds.
The tiniest amphibian is a frog known as the paedophryne amauensis. It is also the world's smallest vertebrate animal. It is approximately 0.3 inches long.
Many amphibians have thin, moist skin that aids them to breathe.
Amphibians are regarded as vertebrates because they have a backbone.
Frogs swallow their food whole. The size of what they can consume is determined by the size of their mouths and their stomach.
Frogs cannot live in salt water.
All amphibians have gills, some only as larvae and others for their whole lives.
It is a myth that you can get warts through touching a frog or toad.
A group of frogs is known as an army.
An Amphibian's skin absorbs water and air. This makes them really sensitive to air and water pollution.
The world amphibian population is in decline.
Frogs are often what come to mind when considering amphibians, but you can find many more creatures that belong to this category. You can find certain characteristics an animal should meet to be classified as an amphibian and chances are your yard is filled with them and you did not even know it.
Characteristics of Amphibian are given below:
1) The representatives of class Amphibia thrive nicely both in water and on land i.e. amphibious.
2) Amphibians are cold-blooded or exothermic animals. As opposed to warm-blooded animals, which manage their body temperature internally, amphibians gain heat from outside their body.
3) The skin is thin, smooth, porous, hairless and rarely scaled. The skin includes both poison glands and mucus glands.
4) A bone endoskeleton with different numbers of vertebrae; ribs within some, absent or fused to vertebrae in others.
5) A smooth, thin, porous skin made up of both poison glands and mucus glands.6) Four limbs which may differ in size with the forelimbs of some being much smaller than the hind limbs; some are legless.