Cat whiskers always seem to get all of the attention. And most people understand why cats have whiskers. But if you take a close look at your dog's head, you've probably noticed whiskers standing out here and there, too. Do dog whiskers serve the same functions as in cats? If so, why aren't they arranged the same way? And what about breeds that don't have whiskers? If questions about dog whiskers are keeping you awake, we have the answers you're seeking.