Why Your Dog Licks Walls & What to Do

Possible Causes of Wall Licking

Dogs may lick walls due to medical conditions, anxiety, or compulsive behaviors. For example, thyroid issues have been linked to excessive licking, including flank sucking, which can resemble wall licking. In some cases, licking is a response to stress or unfamiliar environments—like a vet’s office—where dogs may lick the air or their lips while fretting. Persistent licking can also result from compulsive disorders, especially in large breeds, and may lead to skin damage or even self-injury, as seen in rare cases where dogs chew off parts of their owner’s limbs.

Start with a Veterinary Check-Up

Before addressing behavior, consult your vet for a thorough physical exam, bloodwork, urine tests, and dermatology evaluation. These steps help rule out medical causes like hypothyroidism, which can worsen compulsive licking. If a medical issue is found, treatment such as hormone medication may resolve the behavior. Without a vet check, you risk treating symptoms instead of the root cause.

Boost Exercise and Mental Stimulation

Once medical issues are ruled out, increase your dog’s physical and mental activity. Hard aerobic exercise daily is recommended, but always check with your vet first to ensure your dog can handle it. Mental challenges are equally important—enroll in a positive reinforcement class like tricks, obedience, or musical freestyle. Even if your dog isn’t a natural talent, the process of learning keeps the mind engaged and reduces idle time that may lead to licking.

Use Positive Reinforcement and Redirection

Avoid punishment-based training, as it can worsen anxiety and compulsive behaviors. Instead, use clicker training or reward-based methods to teach incompatible behaviors—like fetching a toy or resting their head on a cushion—when they’d otherwise lick. This redirects their focus and builds new habits. Puzzle toys, stuffed Kongs, and automatic treat dispensers can provide mental enrichment when you’re away, reducing the urge to lick.

Manage the Environment and Monitor Triggers

If licking is triggered by specific situations—like reflections or shadows—limit exposure. For example, keep your dog out of the kitchen during cooking if light reflections trigger fixation. In some cases, a temporary cone may be used to prevent licking while healing, but it should not be worn full-time. Consistent communication and a predictable routine help reduce anxiety, which can fuel compulsive behaviors.