for sure, it's a fast fast buzz not the "rattle" hollywood shows you.Most of the rattlers I've come across have more of a high pitched buzzing sound; not the sound most of us associate with them.
got 3, the one in question is a bearded collie - herding dog and generally worthless for protection, which is why we have a pair of shepherd mixes but they didn't think we needed protection from a snake.What kind of mutt you got?