Thanks. We have three different varieties here in California that I am aware of. The Mojave Green rattler out in the desert. It gets around sidewinder style and it's venom is a neuro toxin. Then there is the Diamond Back rattler that is more up in the foot hills above LA area. They aren't very large but there are gobs of them in the spring. Once my brother and I years back were up in the hills above Azuza and walked into a large patch of them. We had to walk out of the area like it was land mined to avoid stepping on the critters. Then there is the Red Rattler which has a nice diamond pattern and a rust colored skin to help it blend into the rust colored ground. It likes to lie in the shade of boulders and bushes where it's rusty color and it's diamond pattern of speckles helps it blend in extremely well. These max out at around three feet, are fat and slow moving. Slow to strike and will vacate the area if alarmed.