Snakes, belonging to the order Squamata, can be found on every continent of the world except for Antarctica. There are approximately 2,700 species. Their long bodies are covered with scales and are without limbs. They have no eyelids or external ear openings. They are carnivorous and eat their prey whole. They can be found in all types of terrain and from elevations at sea level up to mountainous terrain reaching 10,000 feet.