Run your hand up the inside of your dog’s front leg, just above the paw, and you will find a nail that never touches the ground: the dewclaw. It is the toe most owners forget, the nail most likely to be missed at trimming time, and the one behind a surprising number of painful tears and ingrown nails.

This guide covers what dewclaws actually do, the difference between front and rear (and attached and floating) dewclaws, why they overgrow, how to trim them safely, and where the dewclaw removal debate currently sits in Australia.

What is a dewclaw?

A dewclaw is a dog’s version of a thumb or big toe: a fifth digit sitting higher on the leg than the four weight-bearing toes. According to the American Kennel Club, almost all dogs are born with a single dewclaw on each front leg, usually firmly connected by ligament and bone. Some dogs also have dewclaws on their rear legs, and a handful of breeds, such as the Great Pyrenees, Briard, Beauceron and Icelandic Sheepdog, carry double rear dewclaws as part of their breed standard.

Where the dewclaw sits in the bigger picture of pads, toes and nails is covered in our pillar guide to dog paw anatomy.

Front vs rear, attached vs floating

Not all dewclaws are built the same, and the difference matters for both function and injury risk:

• Front dewclaws are almost always properly attached, anchored by bone, ligament and working muscle. They are genuine functional digits.
• Rear dewclaws are less common and often attached only by skin, with no bony connection. These loose, dangly ones are usually called floating dewclaws.

The distinction is easy to feel at home: an attached dewclaw feels firm and moves like a small thumb, while a floating one wobbles freely under the skin.

Do dewclaws actually do anything?

Front dewclaws, yes. The AKC lists several jobs: gripping bones and toys between the front legs, helping dogs grip and climb, adding traction on slippery surfaces, and stabilising the wrist joint. At speed the dewclaw contacts the ground on tight turns, which is why fast, agile breeds like whippets and border collies use them cornering. Working traditions add more examples; in the Great Pyrenees, rear double dewclaws are said to have acted as a brake of sorts on steep downhill chases.

Floating rear dewclaws contribute much less, which is why they feature so heavily in the injury and removal debate below.

Why dewclaws overgrow (and what happens if you ignore them)

The four main nails on each paw get at least some natural wear from footpaths and hard ground. The dewclaw gets none, ever, because it never contacts the ground in normal walking. VCA Animal Hospitals warns that dewclaws often become overgrown for exactly this reason, and can curve all the way around until they grow into the paw pad or surrounding skin.

An ingrown dewclaw is genuinely nasty: the curved nail punctures the flesh, the wound gets infected, and the fix involves a vet trimming the nail out of the skin, cleaning the wound, and usually pain relief and antibiotics. It is entirely preventable with routine trimming.

The other classic dewclaw problem is tearing. Because the dewclaw sticks out from the leg, it catches on things the other nails never meet: long grass, fences, blankets, car interiors, other dogs during play. An overgrown or floating dewclaw is especially snag-prone, and a partly torn dewclaw exposes the quick, which bleeds freely and hurts. If that has already happened, our guide to split and broken dog nails covers the first aid.

How to trim a dewclaw safely

Dewclaws are trimmed with the same technique as other nails, with two extra wrinkles: they are often more overgrown and more curved, and many dogs are more protective of them because the inner leg is a sensitive spot.

• Find the quick before you cut. On light nails the pink quick is visible through the shell; leave 2 to 3 mm of nail beyond it. On dark nails, assume the quick is long, especially in a chronically overgrown dewclaw, and take only small amounts. Our post on nail anatomy and the quick shows what you are trying to avoid.
• Little clips, not one big one. VCA’s advice is to remove 1 to 2 mm at a time, working back gradually and stopping at the first sign of the quick. On a strongly curved dewclaw, aim your final cut around where the nail begins to curve.
• Or grind instead of clipping. A grinder takes the nail back a fraction of a millimetre at a time and leaves a smooth, rounded edge with nothing to catch. That combination, low quick risk plus no snag points, is exactly what a hooked dewclaw needs, and it is what the PetTrimPro electric nail trimmer is designed for. Keep long feathering on the leg clear of the grinder head, and introduce the tool gradually if your dog has not met one before.
• Check dewclaws every trim, every paw. Front and back, and remember some dogs have doubles. A dewclaw hidden under leg feathering can curl a long way before anyone notices, so part the hair and look. A quick test from the AKC: if the nail catches on your finger when you run it past, it is due.
• Trim more often than the other nails if needed. Zero ground contact means dewclaws outgrow the rest of the paw. Even dogs who wear their main nails down on footpaths still need their dewclaws done. A monthly check is the minimum; our safe home nail trimming guide covers the full routine.

The removal debate: should dewclaws be taken off?

Dewclaw removal used to be routine in some breeds, done on young puppies alongside docking-era practices. The direction in Australia is now firmly against removing them without a genuine reason. The Australian Veterinary Association’s policy states that routine dewclaw removal in dogs is unacceptable unless for valid medical reasons: front dewclaw removal should only be considered if the digit is diseased or injured to the extent that amputation is necessary, and preventive removal of rear dewclaws should only occur where there is a real, case-by-case probability of injury, not as routine practice.

In practical terms: a healthy, attached front dewclaw is a functional digit and stays. A floating rear dewclaw that repeatedly tears, or a dewclaw that is badly diseased or injured, is a legitimate medical conversation with your vet, and removal is sometimes the kindest option in that specific case. What has disappeared is the idea of taking dewclaws off “while we’re at it”. For the vast majority of dogs, the right dewclaw care plan is thirty seconds of trimming a fortnight, not surgery.

FAQ: dog dewclaws

Do all dogs have dewclaws?

Almost all dogs are born with front dewclaws. Rear dewclaws are hit and miss: many dogs have none, some have one or both, and certain breeds carry doubles. Some dogs had dewclaws removed as puppies before that practice fell out of favour, so an absent dewclaw is not unusual in older dogs.

How short should I trim a dewclaw?

Same rule as any nail: stop 2 to 3 mm short of the quick, taking small amounts at a time. On an overgrown dewclaw the quick will have grown long too, so you cannot get it short in one session. Trim a little every week or two and the quick will gradually recede.

My dog’s dewclaw is torn and bleeding. What do I do?

Apply firm pressure with a clean towel for five to ten minutes, add styptic powder if it keeps oozing, and keep your dog from licking it. A loose fragment causing little pain can be carefully trimmed away, but a deeply split or firmly attached broken dewclaw needs a vet, who can remove the damaged section with proper pain relief.

Is it cruel to remove dewclaws?

Australian veterinary policy is that routine removal is unacceptable without a valid medical reason. Removing a diseased, injured or repeatedly torn dewclaw on vet advice is legitimate treatment. Removing healthy dewclaws for convenience or looks is not supported.