Some paw licking is just grooming. But a dog that licks or chews its paws a lot, or suddenly starts focusing on one or two feet, usually has a reason.1 The most common cause is allergy: the feet are one of the areas most often affected by environmental and food allergies in dogs.2,3,4,5 Other causes include yeast and bacterial infections, mites, a grass seed or other injury, painful nails, cracked pads, irritants such as de-icing salt, and boredom or anxiety.6,7,8,9,10,11,1 This guide explains how to tell what's behind the licking, when to see a vet, and what helps.
See your vet promptly if your dog:
- Is limping, or won't let you touch one paw8,9
- Has a swelling, lump, wound or draining hole between the toes8,12
- Has red, swollen, smelly or bleeding paws or cracked pads6,13,10
- Has licked a raw sore on the leg or paw that won't heal14
Sudden licking of one paw after a walk in long grass can mean a grass seed. Remove any you can see caught in the fur, but if one has gone into the skin, see your vet.8
What the Research Shows
- Allergy was the most common cause in one large study. In 300 dogs with inflamed paws (pododermatitis), allergies were the cause in 43.7%. Secondary bacterial infection was found in 36% and yeast in 14%.4
- Food allergy explains a minority of itchy dogs. Across 28 studies, mostly at specialty clinics, food allergy was found in a median 18% of itchy dogs (range 9% to 40%).15
- Diet trials take time. An elimination diet fed for 8 weeks identifies more than 90% of food-allergic dogs, compared with about 80% at 5 weeks.16
- Lick sores are often infected. In acral lick dermatitis, about 90% of lesions have a deep bacterial infection, and up to 70% of cases may involve anxiety.14
Normal Grooming or a Problem?
A quick lick to clean the feet after a walk is normal. Signs that licking is a problem include:1,6
- Licking or chewing for long periods
- Focusing suddenly on one or two feet
- Reddish-brown fur between the toes, stained by saliva or yeast
- Red, swollen or smelly paws, or limping
Common Causes of Paw Licking
Allergies
Environmental allergies (atopic dermatitis) and food allergies both commonly target the feet, along with the face, ears, armpits and belly.2,3,5 Environmental allergies usually start between 6 months and 3 years of age.3 Allergies can make paws itch even if the paws never touched the allergen.1 Breeds often affected include Labradors, Golden Retrievers, Boxers, West Highland White Terriers, Shih Tzus and Shar-Peis.3 See dog allergies and food allergy symptoms.
Yeast and bacterial infections
Infections often develop on top of allergies and make the itch worse.3 Infected paws are often red and swollen and may ooze pus, and dogs may lick them constantly.6 Yeast can add greasy debris and a musty smell.13,17 See dog paw yeast infection.
Mites and fleas
Harvest mites are tiny orange mites picked up from grass, mostly from July to November. They often gather on the feet and legs, including between the toes, and cause intense itching.7 Demodex mites can cause inflamed foot pads.18 Fleas rarely live on the feet, but some dogs lick their paws when they can't reach an itch elsewhere.1
Grass seeds, injuries and pain
Barbed grass seeds can bore into the skin between the toes. Signs include sudden licking, limping, pain when the paw is touched and a small hole that may ooze pus.8 Dogs also lick feet or joints that are sore or stiff.1
Interdigital cysts
Painful red or purple lumps between the toes, usually deep infections around hair follicles, can cause licking and limping.12,19 See interdigital cysts in dogs.
Nail problems
Painful nail diseases, such as symmetrical lupoid onychitis, can make dogs lick their paws and resist having their feet handled. German Shepherds are over-represented.9
Dry, cracked pads and irritants
Rough or hot surfaces, cold weather, de-icing salt, floor cleaners and yard fertilizers can dry out or irritate the pads.10 Contact irritation shows up on thinly haired skin such as the webbing between the toes, usually 1 to 2 days after contact.20
Boredom, anxiety and lick sores
Licking can become a habit in bored or anxious dogs, and it can carry on after the original itch has gone.1 Constant licking of one spot, usually on the front of the wrist or lower leg, can cause a raised, raw sore called acral lick dermatitis (lick granuloma). It is more common in large breeds and dogs over 5.14 Your vet will look for a medical cause first.14
What Your Vet Will Do
Because there are so many possible causes, your vet will examine the paws and may take samples, such as tape or swab tests for yeast and bacteria, skin scrapings for mites, or a culture.6 If food allergy is possible, your vet may recommend a strict elimination diet trial for at least 8 weeks, sometimes up to 3 months, with no other treats or flavored medicines.21,16,2 Allergies can't be cured, but they can be controlled.6
What You Can Do at Home
- Rinse paws in cool, plain water after walks, and dry them well.1,17
- In winter, wipe off salt and de-icing chemicals after walks, and consider well-fitting booties.11
- Check between the toes for grass seeds after walks in long grass.8
- Give more exercise and use puzzle feeders or interactive toys if boredom might play a part.1
- A cone (e-collar) or a clean sock can stop licking while a sore heals, if your vet advises it.14
- Don't give human pain relievers or other human medicines; many are unsafe for dogs.22
Frequently Asked Questions
Why does my dog lick his paws all the time?
Most often because of allergies. Infections, mites, injuries, pain and boredom are other common causes.
When should I worry about my dog licking his paws?
If the licking is constant, focuses on one paw, or comes with redness, swelling, a bad smell, a lump or limping.
What can I give my dog to stop licking his paws?
Ask your vet. The right treatment depends on the cause, and some human medicines are unsafe for dogs.
Why does my dog lick his paws at night?
A dog may lick more when it settles down with nothing else to do. Allergies are a common cause of itchy paws.
What do red-brown stains on my dog's paws mean?
Staining from saliva (frequent licking) or yeast overgrowth, often a sign of allergies or a yeast infection.
Why do my dog's paws smell like corn chips?
A mild corn-chip smell usually comes from normal skin bacteria. A strong musty smell with redness or licking can mean yeast.
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Sources and further reading
This article was written and fact-checked on October 18, 2026 against current veterinary references and specialist guidelines:
- PDSA Vets. Vet Q&A: Why is my dog biting/licking their paws? PDSA, August 26, 2020.
- White SD, Moriello KA. Allergies in Dogs. Merck Veterinary Manual (pet owner version), reviewed June 2018, updated September 2024.
- Hoff S (reviewed by Carnevale J). Canine Atopic Dermatitis. Merck Veterinary Manual (professional version), reviewed May 2026.
- Kaltsogianni F, Bouza-Rapti P, Koutinas AF, Farmaki R. Canine pododermatitis: A retrospective study of 300 cases. Journal of the Hellenic Veterinary Medical Society 74(1):5355-5362, 2023.
- Olivry T, Mueller RS. Critically appraised topic on adverse food reactions of companion animals (7): signalment and cutaneous manifestations of dogs and cats with adverse food reactions. BMC Veterinary Research 15:140, 2019.
- Hunter T, Ward E. Pododermatitis in Dogs. VCA Animal Hospitals, updated January 16, 2023.
- PDSA Vets. Harvest mites in dogs. PDSA Pet Health Hub, August 2020.
- FOUR PAWS International. Awns: Why They Pose a Danger to Dogs. FOUR PAWS, accessed October 2026.
- Torres SMF (ed.). Canine Claw Disorders. Small and Large Animal Dermatology Handbook, Vol. 3, University of Minnesota Libraries Open Textbook (CC BY 4.0), 2025.
- Morrison BJ. Cracked Dog Paws? Common Causes and How to Care for Your Pup's Cracked and Dry Paws. PetMD, November 14, 2024.
- American Veterinary Medical Association. Cold Weather Safety for Pets. AVMA, accessed October 2026.
- Moriello KA. Abscesses Between the Toes (Interdigital Furunculosis) in Dogs. Merck Veterinary Manual (pet owner version), reviewed June 2018, updated September 2024.
- Weir M, Williams K, Hunter T, Ward E. Yeast Dermatitis in Dogs. VCA Animal Hospitals, updated September 4, 2026.
- Torres SMF (ed.). Acral Lick Dermatitis - Canine. Small and Large Animal Dermatology Handbook, Vol. 3, University of Minnesota Libraries Open Textbook (CC BY 4.0), 2025.
- Walden LA (reporting Olivry T, Mueller RS). Prevalence of cutaneous adverse food reactions in dogs and cats. dvm360, March 23, 2017.
- Olivry T, Mueller RS, Prelaud P. Critically appraised topic on adverse food reactions of companion animals (1): duration of elimination diets. BMC Veterinary Research 11:225, 2015.
- Maharaj N (quoting Attas A). Yeast Dermatitis in Dogs. American Kennel Club, March 7, 2024.
- Dryden MW. Mite Infestation (Mange, Acariasis, Scabies) in Dogs. Merck Veterinary Manual (pet owner version), reviewed June 2018, updated April 2026.
- Moriello KA (reviewed by Carnevale J). Interdigital Furunculosis in Dogs. Merck Veterinary Manual (professional version), reviewed June 2024.
- Kearley M (reviewed by Price M). Contact Dermatitis in Dogs: Symptoms, Common Causes, and Treatment. PetMD, updated March 11, 2026.
- Hensel P, Santoro D, Favrot C, Hill P, Griffin C, et al. Canine atopic dermatitis: detailed guidelines for diagnosis and allergen identification. BMC Veterinary Research 11:196, 2015.
- Mueller B. Keep Your Medications Away from Pets. University of Illinois College of Veterinary Medicine, March 4, 2019.
About this article
Last updated : new page, written using Merck Veterinary Manual, VCA, PDSA, AVMA and University of Minnesota guidance and published research on allergic and infectious paw disease in dogs.
This page is for general information and is not a substitute for an exam by your veterinarian.
