Is this common?

I have misophonia, an auditory processing disorder that makes it where certain noises and pitches make me very anxious, irritable, and overstimulated, such as chewing, high or very low pitches in some songs, etc. I have 3 dogs and for some reason, when they chew their food, it doesn’t trigger my disorder at all. But when people chew, it does trigger it. Anyone know why?