There's no discomfort like the discomfort caused by a toothache. This unpleasant sensation is easily aggravated each time you speak and eat and is something that warrants an urgent appointment with your dentist. But what about toothaches in the other members of your family who are unable to arrange their own dental treatment? If your beloved dog was experiencing a toothache, how would you even know? Eating One of the clearest signs that your dog is experiencing dental distress is when they have trouble eating.