books.google.com - Amphibians are one group of animals. There are about 4200 species, or kinds, of amphibians. Frogs, salamanders, newts and toads are amphibians. But lizards, otters and seals are not. So what makes an amphibian an amphibian? In this book we will look closely at one amphibian, the red-eyed tree-frog, to...https://books.google.com/books/about/Why_Am_I_an_Amphibian.html?id=9vUS32e7IX8C&utm_source=gb-gplus-shareWhy Am I an Amphibian?