The Corn Snake (Pantherophis guttata guttata), or Re Rat Snake, is a North American species of rat snake. The name "corn snake" comes from the fact that it is often found in corn silos, usually in order to prey upon rodents, which it subdues with constriction. The Oxford English Dictionary cites this usage as far back as 1676. Corn Snakes are found throughout the south-eastern and central United States. Their docile nature, reluctance to bite, moderate adult size (1.2- 1.8 metres or 4–6 ft), attractive pattern, and comparatively simple care make them excellent and popular pet snakes. In captivity, they can live up to 15-25 years. Like all rat snakes, corn snakes are non-venomous.