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Mojave Rattlesnake.Crotalus scutulatus..The infamous Mojave Rattler. This was the first rattlesnake found to have neurotoxic (nerve destroying) properties to its venom-- like cobras and coral snakes. Other rattlers (and vipers in general) possess hemotoxic venom which destroys tissue and blood cells, although recent research has shown that more of them have neurotoxins than previously thought. Some, like the Southern Pacific Rattlesnake here in SoCal, have a cocktail of both, making them arguably even more dangerous due to the unpredictable nature of their bites...Mojaves have one the deadliest bites of any North American snake and a feisty attitude to boot. The first one I ever found came off the pavement trying to get at me when I went to move it off the road. Needless to say I didn't take many photos of it. This one was quite cooperative and I was able to take some nice portraits, but my shooting tends not to be as creative when I have to be so cautious around an animal. Better safe than sorry...Mojaves are easily confused with Western Diamondbacks and their range overlaps in Arizona. Besides subtle differences in the overall coloration, the most concrete way to tell the difference is that the white bands on the tail are broader than the black bands and there are only two large scales between the "eyebrow" scales instead of a bunch of small ones in the Western Diamondback. You'll want to note that if you get bit...