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Corn snake
The corn snake (''Pantherophis guttatus'') is a North American species of rat snake that subdues its small prey by constriction. It is found throughout the southeastern and central United States. Their docile nature, reluctance to bite, moderate adult size, attractive pattern, and comparatively simple care make them popular pet snakes. Though superficially resembling the venomous copperhead and often killed as a result of this mistaken identity, corn snakes are harmless and beneficial to humans.〔(【引用サイトリンク】title=Corn Snake )〕 Corn snakes lack venom and help control populations of wild rodent pests that damage crops and spread disease.〔(【引用サイトリンク】title=Did Someone Say Snakes? )〕
The corn snake is named for the species' regular presence near grain stores, where it preys on mice and rats that eat harvested corn.〔(【引用サイトリンク】title=FLMNH - Eastern Corn Snake (Pantherophis guttatus) )〕 The ''Oxford English Dictionary'' cites this usage as far back as 1675. Some sources maintain that the corn snake is so-named because the distinctive, nearly-checkered pattern of the snake's belly scales resembles the kernels of variegated corn.〔( PetCo Corn Snake Care Sheet )〕〔(Smithsonian National Zoo Corn Snake Fact Sheet )〕 Regardless of the name's origin, the corn reference can be a useful mnemonic for identifying corn snakes.
==Description==
Adult corn snakes have a body length of .〔(【引用サイトリンク】title=Corn Snake Fact sheet )〕 In the wild, they usually live around 6–8 years, but in captivity can live to an age of 23 years or more. They can be distinguished from Copperhead snakes by their brighter colors, slender build and lack of heat-sensing pits.〔(【引用サイトリンク】title=Reptiles and Amphibians of Virginia )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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