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=media type="custom" key="8754320"= ** Amphibian Facts ** BODY STRUCTURE o Have legs (tetrapods) o Moist skin BODY FUNCTION o Have primitive lungs o Diffusion through skin for respiration o Have gills as tadpoles o Three-chambered heart o Ectotherms (cold-blooded) o Body temperature changes with environment REPRODUCTION o External fertilization o External development in aquatic egg o Must return to water to lay eggs! METAMORPHISIS o Eggs o Tadpole stages o Adult TAXONOMY o Kingdom: Animalia o Phylum: Chordata o Subphylum: Vertebrata o Class: Amphibia o Orders: Caudata, Caecilia, Anura o Caudata § Example: salamanders § Have tails & smooth skin o Caecilia § Example: caecilians § Limbless amphibians § Live in tropical climates § Usually blind o Anura § Example: frogs & toads § Some are poisonous § Vocal chords produce sounds for mating

__Article__ [] Do you think that the amphibians will go instincted?
 * Click on the help link above to learn more about how to use your wiki.[[file:Tadpole eggs.bmp]][[file:Tiny salamander.bmp]][[file:frog metamorphasis.bmp]][[file:Tiny salamander.bmp]][[image:poisonous_frog.jpg width="293" height="205" caption="This is a picture of a poisonous tree frog. They have oils on their skin that are extremely poisonous to the touch"]]media type="custom" key="8754276"