![]() ![]() HabitsĪbout once a month snakes shed their skin, a process called ecdysis that makes room for growth and gets rid of parasites. Once in a snake’s mouth, the prey is held in place by teeth that face inward, trapping it there. When they do capture prey, snakes can eat animals up to three times bigger than their head is wide because their lower jaws unhinge from their upper jaws. And bones in their lower jaws pick up vibrations from rodents and other scurrying animals. Openings called pit holes in front of their eyes sense the heat given off by warm-blooded prey. Snakes have several other ways to detect a snack. That lets them know when danger-or food-is nearby. Snakes also have forked tongues, which they flick in different directions to smell their surroundings. There have been several species of snakes discovered that are mostly scaleless, but even those have scales on their bellies. Scales serve several purposes: They trap moisture in arid climates and reduce friction as the snake moves. Whether they kill by striking with venom or squeezing, nearly all snakes eat their food whole, in sometimes astoundingly large portions.Īlmost all snakes are covered in scales and as reptiles, they’re cold blooded and must regulate their body temperature externally. ![]() Nonvenomous snakes, which range from harmless garter snakes to the not-so-harmless python, dispatch their victims by swallowing them alive or constricting them to death. About 600 species are venomous, and only about 200-seven percent-are able to kill or significantly wound a human. ![]() There are more than 3,000 species of snakes on the planet and they’re found everywhere except in Antarctica, Iceland, Ireland, Greenland, and New Zealand. ![]()
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