Yeah, wee have a lot of them out here in the desert and if they don't feel threatened they won't rattle. I've walked right up to them, pinned their head and picked them up and they never rattled till I pinned their head. These were snakes I wanted to skin so didn't want to shoot them and cause damage to the skin.

Now these were western diamondbacks the Mojave is another story, they rattle and get ready to strike way before you get to them. The Mojave was born with an attitude and they like to let you know it. They are also more deadly than the Westerns are.