They have dry, scaly skin. They lay leathery-shelled eggs or produce live young. Except for the crocodilians, they have a three-chambered heart. Snakes are reptiles with many unique characteristics. Snakes have no eyelids.
Snakes have no external ears.
Snakes have no legs. Our Site Original materials on this web site are copyrighted. Commercial use of images or text, in whole or in part, is expressly forbidden without formal approval.