A person who studies Reptiles and Amphibians is called a "Herpetologist". Herpetologists go to school to learn about reptiles and amphibians (and many other things), and then studies and provides information about snakes, lizards,alligators, turtles and other reptilian creatures. They work in universities, natural history museums, and various state game and wildlife departments.
What kinds of things do herpetologists do? Counting populations (how many wild lizards live in Walden?) observing general behavior of select animals (why do rattlesnakes rattle?), conducting food supply studies (what do snapping turtles eat?) and sometimes even searching for new species.
Recently, an entirely new species of lizard was discovered by Jesse Grismer, a herpetology doctoral student at the University of Kansas, who happened to spot the creature on a restaurant menu! The newfound Leiolepis ngovantrii is an all-female species that reproduces via cloning, without the need for male lizards. Here's the full story from the National Geographic Society.
2) How are Reptiles different from other kinds of animals?
3) Investigation: Mystery Animals
Our Reptile Webpages: http://delicious.com/klarosewalden