Identification
As aforementioned, there are 2 to 3 rows of spots on the side of the Pacific gopher snake. However, the San Diego gopher snake (P. c. annectens) has 3 to 4 rows of smaller spots on its side. The Pacific gopher snake's saddle spots do not have the barren characteristic as those of the San Diego gopher snakes do. Also, the spots in the second row of spots are much larger on P.c. catenifer as compared to P.c. annectens. Finally, the Pacific gopher snake generally has more saddle spots than the San Diego gopher snake.
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