The Licking That Won't Stop
You've noticed it. Your dog is spending an unusual amount of time licking at a specific joint, maybe a wrist, a knee, or an elbow. At first you figured it was normal grooming. But it's becoming a pattern. The same spot, over and over. Sometimes you can hear the methodical lapping from the other room. So is your dog just being weird, or is this actually meaningful?
As a veterinarian, I can tell you: persistent licking at a joint is one of the most reliable pain indicators dogs give us. Not the only explanation, but the one I want to rule out first every time.
Why Dogs Lick Where It Hurts
Licking releases endorphins. It's a self soothing behavior that provides mild, temporary relief from discomfort. When a joint aches, dogs instinctively target it the same way you might rub a sore shoulder without thinking about it. The problem is that dogs are so consistent with this behavior that they can actually create secondary problems, like lick granulomas (thickened, irritated patches of skin) that then need treatment on their own.
A 2021 study in Veterinary Surgery found that dogs with confirmed orthopedic pain were significantly more likely to exhibit focused licking at or near the affected joint compared to healthy controls. The researchers noted this was often present months before owners reported lameness, making it potentially one of the earliest visible signs of joint problems.
Arthritis: The Most Common Culprit
If your dog is over five and licking at weight bearing joints (wrists, knees, hips, or elbows), osteoarthritis should be your first consideration. Arthritis develops gradually, and the discomfort can be intermittent at first. Your dog might lick more on days after heavy activity, or during weather changes (yes, barometric pressure affects dog joints just like human ones).
Other signs that support an arthritis connection:
- The licking is worse after walks or active play
- Morning stiffness that improves as the day goes on
- Hesitation before jumping or climbing stairs
- Shifting weight from one leg to another while standing
- Loss of muscle mass in one limb compared to the other
Other Reasons Dogs Lick Their Joints
Allergies
Environmental and food allergies commonly cause itching at the paws, wrists, and lower legs. If your dog is licking multiple joints or paws rather than focusing on just one spot, allergies may be playing a role. You might also notice redness between the toes, ear infections, or general skin irritation. Seasonal patterns (worse in spring and fall) point toward environmental allergies.
Skin Infections
Bacterial or yeast infections on the skin over a joint can cause itching and discomfort that triggers licking. Look for redness, odor, discharge, or hair loss at the site. These are treatable with appropriate topical or oral medications from your vet.
Referred Pain
Sometimes dogs lick a spot that's near but not exactly at the source of pain. A dog with lower back pain might lick at their hips. A dog with shoulder pain might focus on their wrist. This is called referred pain, and it can make diagnosis tricky. This is one reason a thorough orthopedic exam by your vet (not just looking at the spot being licked) is important.
Anxiety or Compulsive Behavior
Some dogs develop repetitive licking as a coping mechanism for anxiety. The difference between anxiety licking and pain licking can be subtle, but anxiety licking tends to be less localized (they might lick various spots), often occurs during known stress triggers, and may respond to environmental changes like more exercise or reduced alone time. That said, pain and anxiety often coexist. A dog in chronic pain often becomes anxious too.
Nerve Issues
Neuropathic conditions, where nerves send abnormal pain or tingling signals, can cause persistent licking. This is less common but worth considering if other explanations have been ruled out, especially in breeds prone to nerve conditions or in dogs with a history of spinal issues.
What You Can Do Right Now
- Document the pattern. Which joint? How often? What time of day? After activity or at rest? This information is gold for your vet.
- Examine the area. Part the fur and look at the skin. Is it red, swollen, warm, or damaged? Is there a lump? Any odor?
- Compare sides. Feel the same joint on both sides. Does one feel warmer, puffier, or does your dog react differently when you touch one versus the other?
- Try to interrupt the cycle. An Elizabethan collar (the cone of shame) isn't a solution, but if the licking has already caused skin damage, it may be necessary temporarily to let the area heal while you address the underlying cause.
The Vet Visit
When you bring this to your vet, they'll likely want to:
- Perform an orthopedic exam, manipulating joints to check range of motion and pain response
- Possibly take X rays of the affected joint
- Check the skin for infection or allergic changes
- Potentially run blood work to look at inflammatory markers
If arthritis is confirmed, the treatment plan typically involves pain management (often NSAIDs formulated specifically for dogs), weight management, appropriate exercise modification, and sometimes physical therapy. Joint supplements containing omega 3 fatty acids can also support long term joint health. Some clients in my practice have added products like LongTails, which contains collagen alongside NR for cellular support. The collagen component is particularly relevant for joint tissue integrity, and clients report good acceptance since it's a powder mixed into food.
Don't Ignore the Lick
I know it's easy to dismiss repetitive licking as a quirk. But when a dog focuses on a joint, they're almost always telling you something. The earlier you investigate, the more options you have for management. Arthritis caught early responds much better to intervention than arthritis caught late. Allergies are easier to manage before the skin is damaged. And your dog deserves to not spend hours every day trying to soothe something that a vet visit could address. Pay attention to the lick. It's worth the conversation with your veterinarian.
