rattlesnakes wallpaper

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venomous snakes throughout the world there are many snakes whose venomous bite can be fatal to humans. in the united states, however, there are only four: the coral snake, the copperhead, the cottonmouth water moccasin and the rattlesnake. snake backgrounds. rattlesnake description & identification there are 32 known species, which contain numerous subspecies with many color variations. they all share in common a distinctively triangular head and jointed rattles on their tail. rattlesnakes, copperheads and cottonmouths are all pit vipers. pit vipers are snakes with two pits under their nostrils to detect heat, thus enabling them to hunt warm-blooded prey.

the pits are so sensitive that the snake can determine the size of the warm-blooded animal and can even detect prey in complete darkness. each species can be identified by variations of the colored patterns on their skin. colors range from shades of brown, gray and black, to tones of yellow, cream, rust, olive and light pink. snake backgrounds. a rattlesnake's skin may display a pattern that is banded, diamond shaped, or blotched, though some species of rattlesnake have no identifying pattern at all. rattlesnakes have a forked tongue that they flick up and down. the tongue picks microscopic airborne particles and gases from the air. when the tongue slips back into its mouth, it touches a sensitive spot on the roof of the mouth called the vomeronasal organ, or jacobson's organ. this organ picks up the particles collected by the tongue and sends messages to the snake's brain identifying the scent as food, enemy, mate or other object or substance. rattlesnakes have external nostrils lined with olfactory cells which also pick up scent, though they are mainly used for breathing. the fork of the tongue is a navigational aid. it can provide information based on which side or fork of the tongue has the strongest presence of a particular odor. snake backgrounds. this information can help the rattlesnake follow its prey or find its way home. rattlesnakes pick up vibrations through their body muscles which send sound through to their jaw bones and on to their inner ear organs. snake backgrounds