Frogs :: essays research papers

Frogs are amphibians in the order Anura. The order Anura is illogical down into 22 different families of frogs and toads. Although they belong to the same order, frogs and toads are different in a lot of ways. Some of the more distinct differences are their scratch and where they live. Frogs usually have smooth moist skin and toads usually have dry pissy looking skin. Frogs spend most of their lives in or secretive water and toads spend more time on land. Amphibian means "double life." Frogs and toads each have two parts to their lives when they live on water and when they live land. A frogs life starts in the water when it is hatched from an egg as a tadpole. A tadpole looks very different from an adult frog. A tadpole has a tail, no limbs, and breathes through gills. After a while the tadpole goes through metamorphosis. During the change the frog grows limbs, the tail disappears, it uses lungs to breathe, and it doesnt have to live in water anymore. As a tadpole, the f rog feeds mostly on vegetation. The tadpoles have a small rasping mouth suited especially for scraping algea from the target of ponds. Depending on the species, it can take a few weeks to a year or more for the tadpoles to become fully grown. Not all frogs hatch as tadpoles. Some species of frogs hatch as froglets. Froglets look just like adult frogs but are a lot smaller. Froglets dont go through a metamophosis. close species that hatch as froglets are found in dry places. Frogs who live in dry places where rains are seasonal have to grow up readily because a tadpole will die if their temporary pond dries up. Adult frogs can live in water or on land, but it eer needs to be near water so its respiratory organs dont dry out.