This Bullsnake or Gopher snake (Pituophis melanoleucus). This one seen is living in a nature center in Liberty, Missouri.. one of he largest snake in the midwestern US (6'6")the Bullsnake lives off on gophers in the Kansas prairie hence it's name Gopher snake. The largest specimen found in Kansas was 7'4" (Collins, Kansas Herpetological Society) The Bull snakes mimics the rattlesnake in appearance and by the tail vibration in the leaves which make it sound like a rattler and designed to scare off intruders. It works I have heard. In addition tthe Bullsnake and it's cousin the Pinesnake( have a habit of puffing up and expelling air like a dragon with loudly made hissing sounds. They used to be common but have become a rare sight perhaps due to pesticide and herbicide use in crop farming near their habitat. I have only caught one live Bullsnake (many found dead on the road)but released it quickly as these animals belong in the wild and not as pets. Museums can show how snakes look by taxidermy of a dead specimen rather than keeping a live one out and away from it's native habitat where it is happy eating rodents which harm crops. Zoos prefer to keep live snakes as a way of educating both science and the public about the life of these animals. This one is in a nature center caged up and miserable...showing it misery in confinement by remaining irritable.