Hognose Morph

The hognose snake is a type of colubrid snake characterized by an upturned snout. They are notorious for playing dead when threatened.

Clever genetic manipulation is responsible for a wide variety of colors and patterns in modern snake breeding. In zoology these differences are known as morphs and are genetic mutations causing departures from the normal or "wild" type and appearance. One generally doesn't find large physical differences in morphs but color and pattern variations can be quite vast and amazing.

http://en.wikipedia.org/wiki/Hognose_snake