A dog ear infection can be painful. You’ll often see a pet dog keep shaking its head to try to get the irritation off its ears. Sometimes, it can itch so much, a dog will scratch his ears until he draws blood. Sometimes, dogs walk around hanging their head at an odd angle. Infections that beset dogs come from three different sources -allergies, mites and odd fungal attack.  The allergies usually come about when your dog is beset by insects like gnats or fleas.  For the odd infection that comes from fungus or yeast, a dog owner will usually notice it from an odor that comes from the ears. When you take your dog in to the vet’s, he will suggest an antibiotic to begin with, and then clean the ears out flushing them. The doctor will then ask you to help your pet keep its ears clean to keep such problems from occurring in the future.