Pacific gopher snake Posted on July 22, 2016By Susan Ballinger Pituophis c. catenifer Pacific gopher snake Key ID features: large, dark blotches tail that tapers to the tip distinct eye stripe. Defensive behavior mimics rattlesnake Notice: “tear” marking oval pupil stripe Keeled dorsal scales Somewhat triangular head Square dorsal Ventral side white, with black spots on edges banded tail photo by: Lisa Robinson