The dog’s dewclaw is a vestigial digit located on the inner side of the paw, slightly above the other toes. Unlike the main claws, the dewclaw hardly touches the ground and therefore does not wear down naturally. When a dog repeatedly licks its dewclaw, this behavior almost always signals a local discomfort that needs to be identified before it worsens.
Overgrown dewclaw: the mechanical cause that owners underestimate
Because it does not make contact with the ground, the dewclaw grows without ever wearing down. Without regular trimming, the claw lengthens, curves, and eventually turns back towards the pad or adjacent skin.
This turning causes constant pressure on the soft tissues. The dog feels a dull pain and begins to lick the area in an attempt to relieve it. At this stage, the skin around the dewclaw may already show redness or the beginning of inflammation.
According to an article from Santévet published in August 2026, it is recommended to check the dewclaws weekly and trim them regularly with an appropriate nail clipper. This simple habit prevents the majority of injuries related to the dewclaw and the resulting compulsive licking. You can find more tips on Les Animaux de la Fée to understand this behavior in detail.
Referred joint pain to the dewclaw in older dogs
A dog licking its dewclaw does not necessarily have a problem at that specific spot. In older dogs, joint pain related to arthritis or dysplasia can project to the tip of the paw. The dog poorly localizes the source of its discomfort and concentrates its licking on the dewclaw, which becomes a focal point.
This phenomenon, highlighted by the veterinary site Certivet, is often overlooked because the dewclaw shows no visible lesions. The owner looks for a skin injury, finds none, and concludes it is a behavioral whim.
If your dog is over seven or eight years old and is licking a dewclaw without redness or apparent wounds, a veterinary consultation focused on a joint assessment is relevant. An appropriate pain relief treatment often suffices to stop the licking.
Licking of the dewclaw related to stress or anxiety
Repetitive licking can also stem from a compulsive behavior triggered by stress. The dewclaw, easily accessible, becomes a prime target for an anxious dog, much like a person biting their nails.
Signals indicating a behavioral cause
- Licking occurs in specific contexts: absence of the owner, arrival of a new pet, moving, or changes in daily routine
- The dewclaw and surrounding skin show no redness, swelling, or ingrown claw, but the fur in the area is constantly damp or discolored (rusty tint on light coats)
- The dog also licks other parts of its body (pads, flanks) or shows other signs of anxiety: panting without effort, frequent yawning, destruction of objects
In this case, addressing only the dewclaw will not resolve anything. It is necessary to identify the source of stress and, if needed, work with a veterinary behaviorist. Self-mutilation through licking can create secondary skin lesions (hot spots, moist dermatitis) that complicate the situation.
Dermatitis, allergy, or local infection: when the skin speaks
Some dermatological causes lead to targeted licking of the dewclaw or the entire paw. Skin allergies, whether food-related or environmental, trigger itching often localized to the extremities of the limbs.
Skin signs to check around the dewclaw
- Persistent redness or thickened skin at the base of the dewclaw
- Oozing, scabs, or unusual odor, which may indicate a secondary bacterial or fungal infection
- Localized hair loss (alopecia) in the licked area, a sign that the licking has been ongoing for several days or weeks
Licking that produces an open wound requires prompt consultation. Acute moist dermatitis (hot spot) can spread within hours. The veterinarian will prescribe antiseptic cleaning, sometimes a local antibiotic treatment, and possibly the use of an Elizabethan collar to break the licking-inflammation vicious cycle.
Concrete solutions to stop dewclaw licking
The response entirely depends on the identified cause, but some measures apply in all cases.
Trimming the dewclaw every two to three weeks remains the basic prevention. Use a guillotine or scissor-type nail clipper, cutting just before the pink part (the quick). If the dewclaw is already ingrown or turned, have the trimming done by the veterinarian to avoid bleeding.
In cases of compulsive licking related to anxiety, enriching the dog’s environment significantly reduces repetitive behaviors. Occupation toys, longer walks, and a stable routine are simple levers before considering medication.
For dermatological causes, the veterinarian will guide you towards allergy testing or an elimination diet. Applying an over-the-counter soothing product may provide temporary relief but does not replace a diagnosis.
Licking of the dewclaw is never trivial when it repeats over several days. Overgrown claw, referred pain, chronic stress, or local dermatitis: each cause has its solution, provided it is identified early. A well-maintained dewclaw and a regularly observed dog are sufficient to prevent the vast majority of these situations.