Seems to me it might give them diahreah (I never could remember how to spell it)(note to spelling Nazis: Spare me the lecture and give me the ticket) and that would be the pitts 4 a bulldog, causing him to "dog-trot!"
Furthermore... it would certainly keep him from chasing his tail, except they already cut those off, right? We wouldn't want the tail to be wagging the grinning dog, now would we?
And finally... no one should ever eat mayonaise when Miracle Whip is so spectacularly superior in every imaginable way! (in my overblown opinion)(grinning like a slit watermelon)