Amphibians Class Characterization

Amphibians are cold- blooded animals that have features between fish and reptiles. They live both on land and in water. Their larvae develop in water breathing through gills, once they mature they begin to breathe through lungs and skin. Amphibians lay eggs but the eggs don't have a shell or an amniotic membrane that surrounds the embryo.

Characterization Benefits

Amphibians being cold- blooded means that they don't have a regular body temperature, they take on the temperature of their environment. During hot and dry weather they go into a state of hibernation called estivation. They are also mostly found near freshwater because if their skin dries out they will die.

Amphibian Order

The order of the amphibian class is Anura, Gymnophiona, and Caudate. My order is the Anura and the Anura order contains frogs and toads. Anura which is also called "Salientia" means absence of tails, out of the orders that make up the amphibian class the this order makes up most of the class. The Anura order has about 4500 species. This order is different from the other two because these species have four legs and reproduce through "External Fertilization".


Most frogs are characterized as having long hind legs, a short body and webbed fingers and toes. Frogs either live in water or on land where they jump and climb to get from place to place. Frogs either lay their eggs in puddles, ponds, or lakes. Their larvae are called tadpoles they develop gill because they live in the water when their first born, the gills eventually go away but their adulthood. Adult frogs have a carnivorous diet eating mostly arthropods, annelids, and gastropods.

Family (Hylidae)True Tree Frogs

This family is found all over the world in places such as the Americas, Europe, Northern Asia, and Norther Africa. This family is most represented in South America. These frogs range from large to small in size, and usually have a distinct adhesive to discs that aid in climbing. This family is one of the largest among the Anuran order and has over 900 known species.

Tree Frog (Hylidae)

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