Good points, ginter. I've also heard the Eastern Sonoran and Western Bull's look a lot alike.

First of all I'm no Pit expert but when I first looked at the snake, my initial thought was Sonoran Gopher. I'm just going by blotch color. I've noticed on a lot of Sonoran's that the blotches start out brown or reddish brown then gradually change to black before you get to the tail. In a lot of Great Basin's, I've noticed the blotches start off black at the neck then fade to brown at mid body then change to black again near the tail. I wouldn't say that was the rule but its what I've noticed in most of them. I'm not sure where Bull's fit into that category.

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