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Snakes

                                           FACTS

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! Snakes are found on almost every continent (except Antarctica)

! They range in size from the tiny, 10 cm-long thread snake to the Reticulated python of up to 8.7 meters (29 ft) in length

! Most species are nonvenomous and those that have venom use it primarily to kill and subdue prey rather than for self-defense. Some possess venom potent enough to cause painful injury or death to humans.

! Nonvenomous snakes either swallow prey alive or kill by constriction.

! There are over 2,900 species of snakes

! Snakes use smell to track their prey. They smell by using their forked tongues to collect airborne particles

! Most snakes focus by moving the lens back and forth in relation to the retina, Asian vine snakehave binocular vision, with both eyes capable of focusing on the same point.

! Pit vipers, pythons, and some boas have infrared-sensitive receptors

! The skin of a snake is covered in scales.

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