Why Do Dogs Lick Their Wounds?

Dog licking wound

When a dog has an injury, or really anything that is bothersome to them, they tend to react by licking the area. There are likely a few varied reasons as to why dogs exhibit this behavior. Trying to relive pain, cleaning the area, soothing themselves, and hyper fixation are all possible explanations for dog wound licking.

Why Do Dogs Lick Their Wounds?

One reason dogs lick their wounds is that the wound is painful or irritating to them. Licking the area is an attempt to relieve the pain in the area. A dog licking their wound is akin to a human rubbing an area on their body that hurts. Some wounds and surgical incisions can also start to itch as they heal. Dogs will lick during the healing process to alleviate itching. 

Additionally, wounds are often dirty or contaminated with debris. Because dogs cannot wash the wound, they utilize what they have available for cleaning, which is their tongue.

When a part of the body hurts, dogs may use rhythmic licking of the area to comfort and soothe themselves. This behavior may have a calming effect on the injured animal.

Like humans, dogs can find themselves easily hyper fixated on things. This is especially true of wounds or other irritating things on their bodies. The need to lick can be so strong for a dog that it can be extremely difficult to stop the behavior.

What Types of Wounds Do Dogs Lick?

A dog is likely to lick any wound on their body, whether large or small. Even minor irritations, like rubs from harnesses or other equipment, can cause a dog to lick. Nails cut too short, flea and ant bites, scratches, and other skin or nail issues may result in licking.

Additionally, dogs may lick areas of their body that hurt, even if the skin is intact. Painful joints, fractures, injured muscles, impacted anal glands, and painful bladders may all be a target for a dog to lick. Allergies, both food and environmental, may also cause a dog to lick, especially their paws.

Signs of Licking Wounds in Dogs

Of course, you may directly observe your dog licking their wound or another painful part of their body. However, some dogs tend to only lick when they are left alone and are unobserved.

To identify the signs that mean that your dog has been licking a specific area, look first for moistness around the wound or irritated area. Saliva making the hair wet is a sure sign that your dog has been licking.

Another indication that your dog has been licking their wound is redness, hair loss, and irritation. Dogs’ tongues are rough and will pull the surrounding hairs out. The friction resulting from the licking will lead to redness and irritation of the area.

However, if it has been a little while since your dog has licked the area, you may not observe the fur being wet. Another indication of licking in dogs is a brown staining of the fur where they have licked. This staining is due to a chemical reaction between the hair and the saliva. The feet and anal area are often affected by this staining.

Should You Allow Your Dog to Lick Their Wound?

There is a myth that dogs’ mouths are “cleaner” than a human’s mouth. It is also stated that a dog’s licking of their wound is always beneficial and speeds healing. Though neither of these is true, the latter may be true in some cases.

Contrary to popular belief, like humans, dogs’ mouths are full of bacteria. Though there are some properties of dog saliva that have been shown in studies to kill bacteria, the dog’s saliva is only effective against very specific types of bacteria. Due to the fact that the dog will likely introduce many more bacteria into the wound than its saliva will be able to kill, it is rarely a good idea to allow them to lick.

Licking also results in additional damage to the wounded area and will increase irritation and inflammation. It may also open wounds that were previously closed and delay healing, especially if there are sutures in the wound.

There are a few situations where the dog should be allowed to lick their wound, but owners should always follow the advice of their veterinarian and only allow licking if directed to do so.

How to Stop a Dog From Licking Their Wound

The first thing to do if you notice that your dog is licking their wound is to treat the wound. Treatment will depend on the nature, cause, and severity of the wound. Cleansing and suturing the wound may be necessary. Your veterinarian may also prescribe antibiotics and pain-relieving medications.

Once the wound is appropriately treated, there are a number of strategies that owners can employ to discourage the dog from licking a wound.

Elizabethan Collar (soft or rigid)

dog wearing Elizabethan Collar to prevent him from licking

JunAh666 / Getty

These collars are affectionately known as “cones” and act as a barrier to prevent dogs from being able to reach and lick their wounds. It is essential to ensure that the Elizabethan collar is the proper size. It also must be secured around the dog’s neck snugly enough to prevent the dog from removing it but loosely enough to be comfortable. To guard against the licking of extremities, the collar should extend 2 inches beyond the dog’s nose.

Inflatable Dog Collar

Dog wearing inflatable collar to prevent him from licking

cmannphoto / Getty

Another device that may be useful in preventing licking by your dog is a soft, inflatable collar. These collars encircle only the dog’s neck and are inflated with air to prevent the dog from being able to reach the area that they are trying to lick. These collars also must be fitted correctly to ensure they stay on without irritating the dog’s neck. These collars are best for use with wounds on the trunk as the dog may be able to still reach their limbs with their mouths.

Homemade Pool Noodle Collar

closeup of colorful pool noodles for homemade dog collar to prevent licking

 KenWiedemann / Getty

For medium to large dogs, it is possible to make a collar that will dissuade the dog from licking body wounds. An appropriately sized pool noodle is cut into sections and slipped over the dog’s existing collar to encircle the neck. This is a cost-effective method of making a more comfortable barrier collar.


dog wearing sweater to prevent her from licking

Fernando Trabanco Fotografía / Getty

Putting a shirt or sweater on your dog may be effective in keeping them away from a wound on their body. This can be especially useful for protecting abdominal incisions after surgery. Clothes specifically intended for dogs work well, but human baby onesies work for small dogs, and child-sized T-shirts and sweatshirts work well for large dogs.

Things To Avoid

While it is important to deter your dog from licking their wound, there are some strategies that can do more harm than good. Things to avoid when trying to keep your dog from licking include:


Bandages are difficult to successfully place on dogs due to the shape of their bodies and legs. To keep the bandage from slipping off, it often must be snug. However, any bandage that is too tight can have severe consequences, including sloughing of the skin and loss of circulation, leading to limb death and loss. Only licensed veterinarians or veterinary technicians should ever place bandages on dogs.

“No-Chew” Sprays and Ointments

Though some of these products that are designed to keep a dog from licking their wound may be effective, they can also irritate the area as well as cause infection. You should not apply anything to a wound without the permission of the dog’s veterinarian to avoid making their injury worse.

 Final Thoughts

It is natural for a dog to want to lick a wound. Though licking may aid in controlling some specific bacterial infections, there are too many negative consequences to allow it. Licking wounds often leads to irritation, reopening of healing wounds, infection, and delayed healing.