The news item from PetMD is about: Photos of “dogs with underbites” have been the focus of many an adorable Internet slideshow. But while misaligned teeth in dogs, or canine malocclusion, may make our pets seem more endearing or “ugly-cute,” it can be a serious health issue. To learn more about this condition, we spoke with two board-certified veterinary dentists from the Cornell University College of Veterinary Medicine (CUCVM). Here is everything you need to know about canine malocclusion, including symptoms and causes, and when to seek treatment.