The Bullsnake (Pituophis catenifer sayi) is a nonvenomous species found in southern Canada, the central United States, and northern Mexico. These snakes are known to be quite defensive, and will mimic the S-shaped stance of rattlesnakes often found in the same areas to ward off predators.
Also, I got a new snake today! This cutie is Torros the Bullsnake. He's in shed, so he doesn't look HALF as beautiful as he normally is, but I was just too excited to not post a picture. More will come soon!