Dog burns and scalds: the first ten minutes, and the injuries that declare later

Quick answer

Burns are one of the few emergencies where what you do in the first ten minutes changes the final depth of the injury.

Cool the burn with cool running water for at least ten minutes, and up to twenty if the dog tolerates it and is not getting cold. Then cover it loosely with something that will not stick, stop the dog licking, and go to a vet.

The part owners get wrong is not the cooling. It is the assessment. A burn on a dog looks far better on day one than it does on day three, fur hides most of it, dogs rarely blister, and a burn deep enough to be painless is the worst kind, not the mildest.

• Cool with running water, never ice, and never anything from the kitchen cupboard.
• Cool the burn, not the dog. Keep the rest of the body dry, and stop if the dog starts shivering.
• Do not judge severity in the first hour. Burn depth continues to declare itself for two to three days.
• A burn that the dog does not react to is a red flag, because full-thickness burns destroy the nerve endings.
• Any burn from an electrical cable, any chemical burn, any burn that goes all the way around a limb or the chest, and any dog rescued from a fire needs a vet regardless of how the skin looks.

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An electric shock from a chewed cable, and any dog that has been in a fire, must be seen even if the skin looks fine.

Electrical injury causes burns at the corners of the mouth and on the tongue that look trivial, and it can cause fluid to build up in the lungs over the following one to two days. The dog looks well, then becomes breathless. Cut the power at the socket before you touch a dog that is still in contact with a cable. Fire cases carry smoke inhalation and airway swelling that also worsens over hours. In both, the skin is the least of it.
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Decide in 60 seconds

Why cooling works, and why the window is short

A burn is not a single event. There is a central core of tissue killed outright, and around it a zone of tissue that is injured but still alive and still perfused. Whether that surrounding zone survives or dies decides the final size and depth of the wound.

The skin holds heat. When the kettle water or the hot pan is gone, the tissue is still above normal temperature and still cooking. Cooling with running water pulls that stored energy out, which is why running water beats a still bowl: the water carries heat away instead of warming up against the skin.

Cooling also blunts the inflammatory response and reduces swelling and pain, and it does all of this best when it starts immediately. It is still worth doing later, but the benefit falls away as time passes.

Ice does the opposite of what you want. It constricts the vessels supplying the marginal zone, cutting off the perfusion that tissue needs to survive, and cold enough contact adds frostbite on top of a burn.

The competing risk is body temperature. Dogs lose heat faster than people, and a small dog, a puppy, a thin dog or a dog with a large burn can become hypothermic during cooling. Cool the burnt area under the tap, keep the rest of the dog dry and covered, and stop if the dog starts shivering.

What burns on a dog actually look like

Superficial.
Red, dry, painful skin, no deeper damage. The dog reacts to touch. Fur is intact or singed at the tips. Heals without scarring.

Partial thickness.
The damage extends into the dermis. Painful, sometimes weeping, and in a dog often visible mainly as a patch where the skin feels different and where fur pulls out easily. Human burns blister here. Dogs mostly do not, because their skin and coat structure differ. Absence of blisters is not reassurance.

Full thickness.
The skin is destroyed through its whole depth. It may look white, waxy, leathery, brown or charred, and it is dry and firm rather than weeping. It does not hurt, because the nerve endings have gone. Fur in the area comes out in clumps with no resistance.

The counterintuitive rule.
Owners routinely downgrade a burn because the dog is not reacting to it. That is the wrong direction. A dog crying when you touch a burn has intact nerve endings and a shallower injury. A dog that ignores the area entirely may have the deepest burn on the table.

Why the picture changes.
Burn depth is dynamic. A wound that looks superficial in the first hour can declare as full thickness by day two or three as the marginal zone dies and the damaged skin separates. A vet who says the burn needs rechecking in 48 hours is not being cautious for the sake of it.

What fur hides.
Under a thick or double coat, a substantial burn can be invisible from the outside for a day or more. Part the coat and feel the skin. Look for fur that comes away easily, skin that is hot, hard or oddly smooth, and areas the dog will not let you touch.

Cooling, step by step

Everything a burn actually needs at home: running water, non-fluffy dressings, a towel for the rest of the body and a way to transport the dog.

Get the dog under cool running water within seconds if you can. A shower head, a tap, a hose on low pressure or a jug poured repeatedly all work. Cool, not cold, and never iced.

Aim for at least ten minutes and up to twenty. Watch the dog rather than the clock: if shivering starts, the dog is losing more than the burn is gaining.

If the burn is from a hot liquid, flush the area while the wet fur is still hot. The fur is holding the liquid against the skin, so removing that heat matters more than anything else you could do. Do not rub the coat, which drags heat deeper and shears damaged skin.

Do not remove anything stuck to the skin. Melted plastic, tar or fabric fused to the wound comes off in theatre, not in the kitchen.

Then cover loosely. A non-adherent dressing, a clean lint-free cloth, or plastic food wrap laid over the area works. Do not use cotton wool, which sheds fibres into the wound, and do not wrap tightly or circumferentially, because burnt tissue swells and a snug wrap becomes a tourniquet within an hour.

Stop the dog licking. An e-collar, an inside-out t-shirt or simply holding the dog while you travel all do the job. Licking strips the fibrin layer and pushes oral bacteria into an open burn, and with a chemical burn it moves the chemical into the mouth and oesophagus.

The types that need different handling

Scalds.
Kettles, pans, hot drinks, bath water. The coat traps the liquid, so the burn extends beyond the visible splash. Flush thoroughly and part the coat afterwards to check the true extent.

Contact burns.
Hobs, ovens, irons, wood burners, radiators, heat mats, hot water bottles and car exhausts. Older, arthritic and post-anaesthetic dogs are over-represented, because a dog that cannot move away easily stays in contact far longer than a healthy dog would.

Paw pads.
Hot tarmac, hot sand, hot patio slabs, and standing on a hot surface indoors. The classic pattern is a dog that seems fine on the day, then two to five days later the pad surface loosens and peels away, exposing raw tissue underneath. Test the surface with the back of your hand for several seconds before walking a dog on it.

Electrical.
Almost always a puppy or an adolescent chewing a live cable. Look at the corners of the mouth, the tongue and the roof of the mouth for grey, yellow or pale lesions. The serious risk is fluid accumulating in the lungs, which can appear up to a day or two later. Watch for coughing, fast or laboured breathing, or a dog that will not settle. Turn the power off before touching the dog.

Chemical.
Drain and oven cleaners, cement, lime, and strong descalers. Alkalis keep dissolving tissue as long as they are in contact, so they go on burning long after an acid would have stopped. Wear gloves. Brush any dry powder off before you add water, because water activates some powders. Then flush with a lot of running water for a long time. Do not try to neutralise with the opposite chemical, which generates heat. Bring the container.

Flame and smoke.
Singed whiskers and fur, soot around the nostrils and a cough all point to airway involvement. Airway swelling and lung injury develop over hours. Brachycephalic dogs start with less airway to spare and deteriorate faster.

Friction and grooming.
Road rash from being dragged, and clipper burn or cage dryer burn from grooming. These look minor and are frequently deeper than they appear.

Sunburn.
White, pink-skinned, thin-coated and hairless dogs, and any dog with hair loss over the back or belly. Repeated sunburn on unpigmented skin, particularly the nose and ear tips, is a genuine route to skin cancer rather than just a cosmetic problem.

Recognising shock, and why extent matters more than depth

Gum colour and refill time take five seconds and tell you more about a burned dog's circulation than the wound does.

Skin does two jobs that matter here: it keeps fluid in and it keeps bacteria out. A large burn breaches both. Plasma leaks out of the circulation into the tissues, blood volume falls, and the dog can go into shock hours after an injury that looked stable.

That is why a shallow burn over a large area is more dangerous than a deep burn the size of a coin. Extent drives the systemic risk.

Signs to watch for over the first day: pale or grey gums, a slow capillary refill when you press the gum and release, fast shallow breathing, a racing heart, weakness, cold extremities, restlessness, or collapse.

Circumferential burns are their own emergency. A burn that goes all the way around a leg, the chest or the neck contracts as it swells, and it can cut off circulation to the limb or restrict the chest from expanding.

What the vet will ask for

What never to do

Do not apply butter, oil, margarine, flour, toothpaste, egg white or any other kitchen remedy. They hold heat in, they contaminate the wound, and they have to be scrubbed off later, which hurts and damages more tissue.

Do not use ice, an ice pack or a bag of frozen peas. Cold that severe kills the marginal tissue you are trying to preserve.

Do not apply creams or ointments before the vet has seen it. Anything greasy has to be removed before the wound can be assessed and it interferes with judging depth.

Do not burst blisters or pull away loose skin. That layer is a sterile cover until you remove it.

Do not use cotton wool or any fluffy dressing. The fibres embed themselves in the wound.

Do not wrap tightly or all the way around a limb. Burnt tissue swells for hours afterwards.

Do not give the dog food if surgery or sedation looks likely. Phone the practice and ask.

Do not decide it is minor because the dog is not limping or crying. Pad burns declare on day three, electrical injuries declare in the lungs on day two, and deep burns do not hurt at all.

Do not put a sunburnt or heat-injured dog straight back into the same environment. The same pavement, the same radiator and the same unguarded wood burner will do it again.

When to get help

The goal of the first ten minutes: heat removed, wound covered, dog warm and settled, and a vet already expecting you.

Go now for any burn larger than the dog's paw, any circumferential burn, any burn from a chemical or an electrical cable, any dog out of a fire, any painless burn, and any sign of shock.

Go the same day for scalds, contact burns that have broken the skin, and any burnt paw pads.

Go within 24 to 48 hours for a small superficial burn that is healing as expected, and go sooner if the appearance changes, if it starts to smell, or if the dog becomes reluctant to use the area.

Phone ahead in every case. A practice that knows a burn is coming can have pain relief, fluids and a clipped, sterile setup ready rather than starting from a cold room.