Dew claws are extra nails located on the inner part of a dog’s legs and are a normal part of canine anatomy. They require regular attention because their position and structure differ from the other nails.
Understanding how a dog’s dew claws should look and function can help owners recognize when something is not normal.
In this guide, we explain common dew claw problems in dogs, what they may mean, and when veterinary care may be needed.
Table of Contents
Dew Claw Problems in Dogs: Why They Happen
Dew claw problems in dogs often happen because the claw is longer and more exposed than the other nails, making it easier to snag and break. Unlike most other nails, dew claws do not receive the same amount of wear from walking, so they generally need regular trimming.
A damaged dew claw can be particularly painful because the inner part of a dog’s nail contains blood vessels and nerves.
If the nail breaks far enough to expose this sensitive tissue, bleeding and significant discomfort can occur.
Dew Claw on Dogs
A dew claw is an extra nail located on the inside of a dog’s leg, positioned higher than the other toes. Most dogs have dew claws on their front legs, while some also have them on their hind legs.
Front dew claws are often attached to the leg by bone and joints, whereas rear dew claws may be attached more loosely by skin and soft tissue.
Dew claws are part of a dog’s normal anatomy and can have a useful function. They may provide additional grip and stability when a dog runs, turns, or climbs.
Because dew claws are positioned higher on the leg and may not contact the ground as much as other nails, they can require regular trimming.
Common Dew Claw Problems in Dogs
Overgrown Dew Claws
An overgrown dew claw is one of the most common problems. Because dew claws do not normally wear down against the ground, they can continue growing until they become curved, hook-like, or long enough to catch on objects.
Very long claws are more likely to snag and break, and excessively long nails can also interfere with normal foot placement.
Some dogs need their dew claws trimmed more frequently than their other nails.
Related: Dog Chewing on Dew Claw (Here’s Why)
Broken or Torn Dew Claw
A dew claw can break when it catches on carpeting, vegetation, upholstery, or another surface.
Jumping or landing awkwardly can also bend a nail backward and cause it to crack or tear.
A broken dew claw may bleed, and dogs often become suddenly painful after the injury. You may see limping, paw holding, licking, or reluctance to allow the foot to be handled.
Split Dew Claw
A split dew claw may have a crack running lengthwise or across part of the nail.
A small superficial split may cause relatively little discomfort, while a deeper split can expose the sensitive inner portion of the claw.
If the damaged section continues catching on objects, the injury can become worse.
Related: Dog excessively licking paws and legs (Why it happens)
Dew Claw Bleeding
Bleeding can occur when a dew claw is cut too short or breaks deeply enough to expose the quick.
The quick contains blood vessels and nerves, so damage to it can cause both bleeding and pain. A broken nail may continue bleeding if the injury is significant.
Persistent bleeding after a dew claw injury warrants veterinary attention.
Infected Dew Claw
A damaged dew claw can become infected, particularly when the nail bed or surrounding tissue has been injured.
Signs can include redness, swelling, warmth, discharge, an unpleasant odor, persistent licking, and increasing pain.
Because the sensitive tissues inside the nail are connected to deeper structures, infection associated with a damaged nail can potentially become more serious.
Dew Claw Swelling
Swelling around a dew claw may occur after trauma or infection. A recently injured claw may be swollen and painful because of the injury itself.
However, increasing swelling, discharge, heat, or worsening pain can suggest infection or a more substantial injury.
Dew Claw Growing Abnormally
Some dogs develop unusually shaped, brittle, or repeatedly breaking nails.
If only one dew claw is affected, trauma or local disease may be more likely. If several claws become brittle, misshapen, split, or fall off without an obvious injury, a nail disorder may need to be considered.
Symmetric lupoid onychodystrophy, for example, is an uncommon condition that can cause multiple nails to become brittle, malformed, and prone to breaking or falling out.
Dew Claw That Keeps Breaking
A dew claw that repeatedly breaks should not always be attributed to bad luck.
Repeated nail breakage can occur when claws are excessively long, but recurrent problems involving several nails can also occur with underlying nail disease.
If the same dew claw repeatedly becomes damaged despite appropriate nail care, a veterinarian may need to examine the nail and surrounding tissues more closely.
Hind Dew Claw Problems
Some dogs have dew claws on their hind legs, and some breeds normally have double hind dew claws.
The anatomy of hind dew claws varies between dogs. In some breeds, double hind dew claws are part of the breed standard.
These digits generally do not cause a problem unless they become damaged or infected.
Because hind dew claws can have different structures and attachments, a veterinarian should assess a problematic hind dew claw rather than assuming it is identical to a typical front dew claw.
Related: Dog excessively licking front legs (Here’s why)
Dew Claw Problems in Dogs With Limping
A painful dew claw can cause a dog to limp or hold up the affected paw. Broken nails are among the common causes of sudden lameness in dogs, and a damaged nail can be extremely painful even when the injury looks relatively small.
However, not every limp involving a paw is caused by the dew claw. Dogs can also limp because of injuries involving the pads, toes, joints, bones, muscles, or other soft tissues.
If the dew claw looks normal but your dog continues limping, another source of pain should be considered.
Dew Claw Problems in Dogs With Licking or Chewing
Persistent licking or chewing around a dew claw can indicate pain or irritation. A dog may lick after a minor nail injury, but continued licking can also occur with infection or another problem affecting the foot.
If the skin becomes increasingly red or moist, swelling develops, or discharge appears, veterinary evaluation is appropriate.
Dew Claw Problems in Dogs That Keep Coming Back
Recurring dew claw problems deserve more attention than a single accidental tear. Repeated breakage may be related to nail length, the way the claw grows, or the dog’s environment.
But if multiple nails are becoming brittle, misshapen, discolored, or repeatedly lost, a veterinarian may investigate for nail disorders, infection, or other underlying disease. Symmetric lupoid onychodystrophy (SLO), for example, typically affects multiple nails rather than only one isolated claw.
When to Call or Visit the Vet
Contact your veterinarian if your dog has a dew claw problem along with:
A deeply cracked, torn, or partially detached claw
Persistent or significant bleeding
Severe pain or crying when the paw is touched
Limping that does not quickly improve
Redness or swelling around the nail
Pus or other discharge
A foul smell from the dew claw
A claw that has become very dark or otherwise changed unexpectedly
Repeatedly broken or misshapen dew claws
Several nails becoming brittle or falling out
A dew claw injury that appears to involve the skin or deeper tissue
Increasing pain despite the initial injury appearing minor
Immediate veterinary attention is particularly important when the claw is badly torn, bleeding will not stop, the dog cannot comfortably use the leg, or the surrounding tissue is becoming increasingly swollen or infected.
Dew Claw Problems in Dogs: Treatment
Treatment depends on the specific dew claw problem. The veterinarian will examine the nail, quick, surrounding skin, and affected foot to determine whether the claw is simply overgrown, broken, infected, or associated with a deeper injury.
A damaged portion may need veterinary trimming or removal, while infections may require appropriate cleaning and medication based on the cause.
If the problem repeatedly affects multiple nails, additional testing may be recommended to look for an underlying nail disorder; testing can include examination of samples for bacteria or yeast, fungal culture, X-rays when bone involvement is suspected, and other tests depending on the findings.
Key Takeaway
Dew claw problems in dogs are often caused by overgrowth, accidental snagging, splitting, or breaking.
Because dew claws do not receive the same natural wear as most other nails, they can become particularly vulnerable to injury.
A slightly overgrown dew claw may be a routine nail-care issue, but a broken, bleeding, swollen, infected, or repeatedly damaged dew claw can be painful and may need veterinary treatment.
If several nails are becoming abnormal or the same problem keeps returning, the underlying cause should also be investigated.