1) Bull snakes 2) Genus pituophis 3) Reptile genus 
Pituophis is a genus of nonvenomous colubrid snakes commonly referred to as gopher snakes, pine snakes, and bull snakes, which are endemic to North America. ==Geographic range== Species within the genus are found throughout the western and southern United States and in Mexico. All species of Pituophis are large and powerfully built. The head is re...
[n] - bull snakes
genus Pituophis noun bull snakes