Insects, reptiles, amphibians...entirely familiar, yet, completely alien to us. Humans have walked on Earth for only a mere fraction of the 350 million years that insects have crawled, burrowed, jumped, bored, or flown on the planet. Almost everyone recognizes a fish, a bird, or a mammal, even a reptile. But what about an amphibian?... snakes, lizards, crocodiles or turtles. What is your favorite?