If you've already taken him to your primary vet and tried medication ... a dead giveaway that a dog is licking," she says. "It's usually salivary staining and/or Malassezia yeast overgrowth ...

Your veterinarian should give you instructions ... such as dogs with allergic skin disease. Dogs with a Malassezia infection ...

So it's important for your vet to establish what kind of infection your dog has. Fortunately, an infection in general is easy to spot, but you cannot always tell it is yeast (vs. bacteria ...