Amphibians

= Videos = These videos did not have a URL to import the videos onto this page so click on the links below to view: = [] = Many have seen humans with an extra toe or maybe a baby connected by the head but this interesting amphibian has 3 heads and 6 legs. With three brains trying to control one animal, it must be very hard to move around but somehow, these frogs, or this frog, is able to move perfectly fine. =[]= There are many different types of frogs in the large rainforests but how did there get to be so many? Watching this video, it is easy to learn that the frogs lay there eggs in certain spots for certain reasons. In this video, it shows that the frogs lay their eggs on the underside of leaves right above water so when it rains, the eggs will fall into the water and become tad poles before full grown frogs like there are so many today of.

=Frog Article= [|Sierra Frog] Citation: []

=**Amphibian Pictures:**= == Salamander - [] Salamander means "fire lover" the scientific name for the spotted salamander is: Ambystoma maculatum. Ambystoma meaning, "blunt mouth" and maculatum meaning, "spotted." The southeastern US has more salamanders than any other region in the world. They can live for 20-30 years and have 10 times more DNA in each cell than humans do.

Tree frog - [] Tree frogs sizes can range anywhere from 1.5 cm to 10 cm. Tree frogs have strong and long legs which enables them to jump, climb, and make them very agile. They are able to cling, walk on narrow branches, and jump up to 40 times their own length.

Newt - [] Newts tend to grow to be only around 15 cm long. They are normally found in North America, Europe, and Asia and are often times thought to be a subspecies of salamander. Some species of newts can live up to 27 years and there are thought to be about 15 different species of newts throughout the northern hemmisphere.

Bullfrog - [] Being the largest of North American frogs, the Bullfrog can grow up to a length of 8 inches and weigh up to 1.5 pounds. Even the tadpoles of this species can reach 6.75 cm in length. They are among the most wide-ranging of all North American amphibians, and can be found in freshwater ponds, lakes, and marshes.

Gymnophiona - [] Gymnophiona's have a long, limbless, cylinder shaped body and their skulls are bony and compact. Their degenerate eyes are covered with bone or skin and their vertebral muscle and structure makes it possible for them to move as a single unit.

Info Amphibians: evolution from water to land Amphibian characteristics Amphibian means "double life" live in water and on land Amphibians are a link between fish and reptiles believed to have evolved from the lobe finned fish Body structures legs (tetrapods) moist skin Body function primitive lungs& diffusian through skin for respiration gills as tad poles three chambered heart ectotherms (cold-blooded) body temperatures change with the environment reproduction external fertili __ zation __ __ ﻿ external development must return to water to lay eggs __ __ ﻿ Metamorphosis __

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