Today there are 6,800 reptile species on earth; the major groups are alligators/crocodiles, turtles, lizards, and snakes. All reptiles are cold-blooded, and have bodies covered in dry, horny scales. Some reptiles lay eggs; others give birth to live young. Reptiles are distinguished from amphibians by the presence of scales.
Did You Know?
The Endangered Species Act turned 40 on December 28, 2013. 99 percent of the plants and animals protected by the ESA have been saved from extinction, including the bald eagle, brown pelican, gray whale, and peregrine falcon, all of which can be seen at Point Reyes. More...