摘要

From alligators to salamanders and everything in between, the world of reptiles is unique -- and very different from our own. There are 6,770 kinds of reptiles and more than 4,000 types of amphibians on the earth today. That's a lot of different lizards, snakes, turtles, frogs, and other creatures that live all around us! Learn what it's like to be a reptile or amphibian -- from birth, to reproduction, to old age. So the next time a snake winds past or a frog hops by, its unusual world will come alive for you!