Frogs Just about everyone knows what a frog is and what it looks like. There are some people out there who don't. This is why I am writing this report. Frogs are cold-blooded amphibians. This means that they don't feel the difference in hot and cold weather. The first thing you notice when you see a frog is its shape and color. Frogs have long hind legs that, when they sit still, are folded up in a kind of N form. Frogs have a large head and no neck. They have small bodies, no tail and their front legs are pretty short compared to their back ones. Scientists think that frogs probably evolved from an amphibian with four legs and