Yes, a dog licking a wound can cause infection or worsen it, despite the myth that it helps healing, because their mouths contain numerous bacteria like Pasteurella that can lead to severe issues, especially for people with compromised immune systems, and excessive licking can also damage tissue and reopen wounds. While saliva has some mild antibacterial properties, it's not enough to overcome the harmful germs, making it crucial to stop dogs from licking injuries.
It's a common myth that your dog's saliva has highly antibacterial properties so their licking can be good for their wounds. Actually, saliva is only mildly bacterial, and can also be a source of disease-producing bugs. The trauma caused by licking is also likely to make wounds worse.
Short answer: No -- you should not let your dog lick your cut or scrape. Dog saliva contains bacteria and enzymes that increase infection risk, delay healing, and can cause other complications. Dog mouths carry bacteria uncommon on human skin (Pasteurella, Capnocytophaga, Staphylococcus species, and others).
It's very unlikely that you'll ever develop a capnocytophaga infection if you're in good health. No matter what your health status, don't let your dog lick your skin if you have a cut, scratch, broken blister or open wound. Should your dog bite you or break your skin with its teeth, let your doctor know.
Moisture and inflammation from licking, and in some cases, the bacteria that lives in the saliva, can slow healing or even make the infection worse. This is why veterinary visits are recommended for even superficial wounds.
Dog bites or even the contact of wound surfaces with dog saliva may lead to life‐threatening sepsis and potentially fatal outcomes.
Dogs are a major reservoir for zoonotic infections. Dogs transmit several viral and bacterial diseases to humans.
What should I clean the wound with? Warm tap water is recommended for cleaning most wounds. Warm saline (salt solution) may also be used.
Signs and symptoms of a Capnocytophaga infection include: Blisters at the bite or scratch wound. Redness, swelling, draining pus, or pain at the wound.
It is an instinct. When your dog licks a wound, there are healing capacities in their saliva and it can also help cleanse the area. They are natural healers when it comes to grooming and cleaning. It is a part of how they are wired.
Labrador Retriever
This outgoing and friendly dog breed has the top spot as being the lickiest of them all. They love to show affection in this way and the Labrador Retriever is friendly with all age groups so they are likely to lick all types of people.
Bandage wraps are a practical alternative to traditional dog cones, especially for injuries or surgical sites located on the body or limbs. These wraps involve using medical-grade bandages or similar materials to cover and protect wounds, preventing the dog from licking, biting, or scratching the affected area.
Capnocytophaga canimorsus is a gram-negative bacterium found in the oral cavity of up to 74% of dogs and 57% of cats [1]. While it is a commensal bacterium that is part of the normal oral flora of these animals, in rare cases, it can cause illness in humans.
Spot an infection – which can result in surgeries, amputations or even death – by watching for these signs:
Premature uncovering can delay healing and increase the risk of infection. For minor cuts, epithelialization can take 3-5 days, longer for more complex wounds. Dry and Stable: When determining how long to cover an open wound, ensure the area is dry, without drainage or moisture seeping through the dressings.
It's still possible for a wound to heal even if a dog keeps licking it, however, it's likely to take longer and the overall quality of healing may be affected. There are also certain risks if your dog is excessively licking their wound, such as increased chance of infection.
Salt water bathing can be used on dogs and cats with minor wounds if advised by your vet. For more serious injuries, always see your vet for treatment. Salt water bathing can be good for treating minor wounds, such as cuts, grazes, minor bite abscesses or skin folds if not too near the eyes.
This article outlines five critical warning signs of pet wound infections: increasing redness/swelling, concerning discharge, unusual heat around the wound, pain/behavioral changes, and foul odor.
Dogs may lick a specific area on their body if they feel pain, irritation, or an infection. Allergies, skin conditions, or even joint discomfort can trigger obsessive licking. If you notice redness, swelling, or hair loss, it's best not to ignore it.
Early warning signs of sepsis include fever or low temperature, chills, rapid breathing or heart rate, confusion, slurred speech, extreme pain or discomfort, clammy/sweaty skin, and reduced urine output, with children potentially showing fewer wet nappies, vomiting, or a non-fading rash. These symptoms, often appearing after an infection, signal a severe body response and require immediate emergency care, as sepsis can rapidly worsen, according to the Mayo Clinic.
But some types of bacteria, viruses, parasites, and fungi that pets can carry can make people sick though a bite or scratch, or if someone has contact with an animal's waste, saliva, or dander.
Capnocytophaga bacteria are commonly found in the mouths of dogs and cats. Capnocytophaga germs can make people sick if they're bitten or the dog or cat's saliva (spit) gets into an open wound or sore.
Common symptoms of bacterial infection include:
It generally takes 2-30 days to get sick after having contact with the bacteria that cause leptospirosis. The disease may occur in two phases: In the first phase, people may have fever, chills, headache, muscle aches, vomiting, or diarrhea. The person may feel better for a while but become ill again.