Your dog’s diet affects everything: her coat, her energy and her health. So it’s no surprise that loving canine owners search far and wide for the Michelin-starred purveyor of pet food (or even make their own doggy treats). But just like wellness fads in the human world (jade eggs, anyone?), certain veterinary crazes might not actually be the best for your four-legged family member. To fill us in on the most common food myths, we talked to Dr. Katja Lang, DVM (aka @doctorkibble). Here’s what she told us.