Paw Pads: How to Check for Cracks, Burns and Grit Between the Toes
A dog's paw pad is a specialised structure: thick keratinised epidermis layered over fat and connective tissue that acts as both shock absorber and insulator. That toughness is real, but it has limits, and the damage that slips past those limits tends to hide in places owners rarely think to look.
What the Pad Is Actually Made Of
The outer surface of a paw pad is digital and metatarsal skin so dense with keratin that it resembles the sole of a shoe. Beneath it, a fat pad cushions the bones and tendons of the foot. The interdigital skin, the soft webbing between each toe, is thinner, moister, and far more vulnerable. Burns, grit, and fungal overgrowth almost always start there, not on the tough central pad. When you examine a paw, the central pad gets a glance; the interdigital folds get a proper look.
Checking for Heat Burns and Tar Residue
Asphalt absorbs and holds heat. On a day when the ambient temperature is 30°C, tar surface temperature can reach 60°C or above, hot enough to cause a partial-thickness burn in under a minute of contact. The first sign is usually not a blister but a change in texture: the pad surface looks slightly dull, feels softer than usual, and may have a faint sticky quality from tar adhesion. Press gently across the entire pad surface with your thumb. A burn site will feel warmer than the surrounding tissue and the dog will pull the foot back. Blisters appear later, often within a few hours, and may rupture before you notice them. Tar residue, a black, sticky film, requires removal with a small amount of coconut oil or a vet-approved paw cleaner worked in with a soft cloth. Do not use petroleum solvents. Once the tar is off, assess the skin beneath for redness, peeling, or raw patches. Any of these needs veterinary attention rather than home management.
Reading Cracks and Dry Pads
Healthy pads are firm but not brittle. Cracks form when the keratin layer dries out, common in winter when cold stone and indoor heating pull moisture from the skin, and in summer when hot surfaces bake it. A superficial crack stays within the outer keratin and causes no bleeding. A deep crack reaches the living tissue beneath, bleeds when pressed, and opens a direct route for bacteria. To tell them apart, press the pad flat with your thumb and watch whether the crack widens. A superficial crack closes again when pressure is released. A deep crack stays open, may show pink or red tissue at the base, and will make the dog flinch. Superficial cracks respond to a pet-safe paw balm applied after walks, with the paw kept dry for fifteen minutes afterward. Deep cracks need a vet to assess whether debridement or antibiotics are necessary before any topical product goes on.
Finding Grit and Foreign Bodies Between the Toes
Grit, gravel, grass seeds and thorns migrate into the interdigital space during walks and work their way deeper with every step. The earliest sign is a dog that licks one paw more than the others, or holds one foot slightly raised on a hard floor. Part each set of toes with two fingers, index and middle, and look at the skin in the fold with good light. Healthy interdigital skin is pale pink and dry. Inflamed interdigital skin is red, moist, and may have a brownish staining from chronic licking (a product of porphyrin pigment in saliva). A grass seed that has begun to migrate will often leave a small raised bump or a tiny entry wound. Do not attempt to extract a deeply embedded seed at home; grass seeds have backward-facing barbs and pulling them out without the right instruments drags them further in. A superficial piece of grit that sits visibly in the fold can be floated out with warm water. Anything you cannot see clearly or remove with water alone is a job for a vet.
Building a Routine Check Into Every Walk
The most effective paw examination takes about ninety seconds and happens immediately after the dog comes inside, before the paw has dried and before the dog has had time to lick away evidence. Lift each foot, press the pad flat, part every set of toes, and run a fingertip along the interdigital fold. You are looking for heat, softness, stickiness, bleeding, open cracks, redness, moisture, or anything that was not there yesterday. Dogs that walk on urban surfaces daily benefit from a thin layer of paw balm before the walk as a barrier, and a rinse in lukewarm water after. Neither replaces the check. The pad that looks fine from above often tells a different story when you part the toes and look.