Run cool water over the burn for 20 minutes, start within the first 3 minutes if you can, and put nothing else on it - no toothpaste, no soy sauce, no oil, no butter, no flour, no ice. Then cover it loosely and go to a clinic if the burn covers 15% or more of the body surface, or if any second-degree patch is bigger than a 5 RMB coin. Book the re-check at 24 hours even when the cat looks fine, because a partial-thickness burn is usually deeper on day 2 than on day 1.
Scalds are the most common kitchen burn in cats: a pot tipped at 90-100 °C, a kettle cord pulled, a cat beside a boiling pan. Water at 95 °C destroys skin in under 1 second of contact, and fur holds the heat against the skin for another 5-10 seconds after the cat jumps away.
The first 20 minutes
Use tap water at 15-20 °C, not iced water, at low pressure, and hold the burned area under it for the full 20 minutes - a clock, not a guess. Cooling in the first 3 minutes limits how deep the injury goes; cooling after 20 minutes still helps but changes much less. If the burn is on the back or flank, a jug poured slowly beats a shower head at full blast, which damages already-open skin.
Keep the rest of the cat warm while you cool 1 area: a 4 kg cat loses heat fast when wet, and shivering means the water is doing more harm than good. Dry the surrounding fur, wrap the body in a towel, and leave only the burned part exposed. Stop cooling and call the clinic if the cat goes pale, weak, or starts to shiver.
What never goes on a burn
- Toothpaste, soy sauce, sesame oil, butter, flour, egg white: all trap heat in the tissue and add a layer the vet has to scrub off, often under sedation.
- Ice or frozen peas: 0 °C constricts the skin vessels and can turn a superficial burn into a deep one, plus frostbite on top of a burn after 10 minutes.
- Alcohol, iodine, hydrogen peroxide, antiseptic sprays: they damage new tissue and hurt enough that the cat will fight every later dressing change.
- Cotton wool or a plaster pressed on: fibers stick to an open burn and come off with the wound.
Nothing on the wound is the rule for the first hour, not a suggestion. A clean, dry, non-stick cloth or cling film is the only covering that belongs on a burn before a vet sees it.
Counting 15% of the body surface
The 15% line decides between home care and hospital fluids. A cat's body surface is about 0.25 m² at 4 kg - close to 2,500 cm² - so 15% is roughly 375 cm², about the size of a playing card folded in 3, or a patch 19 x 19 cm.
| Area | Share of surface | Area at 4 kg (cm²) | Typical cause |
|---|---|---|---|
| Head and neck | 8-10% | 225 | Kettle steam, pan splash |
| Each foreleg | 5-7% | 150 | Pulling a pot off the stove |
| Each hind leg | 7-9% | 200 | Jumping onto a hot hob |
| Chest and belly | 30-36% | 800 | A full pot tipped over |
| Back and flanks | 18-22% | 500 | Collateral from a front-leg scald |
| Tail | 2-3% | 62 | Tail in a mug of tea |
Use these to judge scale, not to compute a dose; the area column takes the midpoint of each range. Add the areas and compare with 15%: a burned foreleg and the chest beside it is already 35-43%, which is hospital territory with intravenous fluids. A burned ear or a 2 cm patch on a paw is under 1%, and that one is managed as a wound, not as shock.
Why 24 hours matters
Burn depth declares itself late. A superficial burn is red, painful and heals in 5-7 days. A superficial partial-thickness burn blisters at 6-12 hours, weeps, and is painful. A deep partial-thickness burn looks white or mottled, hurts less than you expect because the nerves are gone, and converts to full thickness in 24-48 hours. Full-thickness skin is leathery, charred or pearly, and painless.
That is why the cat goes back at 24 hours, and again at 48-72 hours if the patch is deep: a burn covering 20% or more can tip a cat into shock 24-48 hours later as fluid leaves the circulation. Photograph the burn at hour 0, hour 12 and hour 24 with a coin beside it for scale, and take the 3 photos to the clinic.
Cover it, keep it warm, move
Lay cling film along the burn, not around the limb, with no tension - a wrap that circles a leg swells tight within 2 hours. A clean, dry, non-stick dressing or a cotton T-shirt over it is enough for the car. Keep the cat at 37-38 °C, never apply an ice pack, and drive with the carrier lined with a dry towel, not a wet one.
Thirty minutes is the target from burn to clinic for anything over 15%, or for a burn on the face, the airway, the eyes, the paws or the perineum. Call ahead so fluids and pain relief are ready when you arrive.
At the clinic: fluid, pain, wound
Most vets estimate fluid needs at 2-4 ml per kg per % of body surface over 24 hours, with half in the first 8 hours, and adjust against urine output. Pain relief goes in during the first hour - an opioid, not a human painkiller; paracetamol and ibuprofen are toxic to cats at any dose. Antibiotics are not routine under 15%, and a wound is cleaned and dressed under sedation rather than at home.
Ask 4 questions at discharge: what percentage was recorded, what depth, when the dressing changes, and what counts as an emergency in the next 48 hours. A burn that smells sweet, weeps green, or has a cat that stops eating for 24 hours needs to be seen the same day. For other kitchen and plant hazards, keep our houseplant emergency guide and the general burn first-aid steps where you can find them in 10 seconds.
Five steps, in order
- Cool under 15-20 °C running water for 20 minutes, starting within 3 minutes.
- Put nothing on the burn; no toothpaste, oil, ice or antiseptic.
- Dry and warm the rest of the cat, cover the burn with cling film laid flat.
- Estimate the area against 15% of body surface and call the clinic with the number.
- Re-check at 24 hours and again at 48-72 hours for any deep patch.
Frequently asked
How long should I cool a cat burn with water?
20 minutes under tap water at 15 to 20 degrees Celsius, low pressure, starting within the first 3 minutes if possible. Cooling limits depth in the first 3 minutes and matters less after 20. Keep the rest of the cat dry and warm while you cool one area, and stop if the cat shivers, goes pale or weakens.
Should I put toothpaste or oil on a cat burn?
No, and nothing else either. Toothpaste, soy sauce, oil, butter and flour trap heat in the tissue and leave a layer a vet has to scrub off, usually under sedation. Ice constricts the skin vessels and can turn a superficial burn into a deep one, so the only thing that belongs on the wound is cool running water, then cling film laid flat.
When does a cat burn need a vet?
At 15% of body surface or more, which is roughly 375 square centimetres on a 4 kg cat, or any second-degree patch larger than a 5 RMB coin. Burns on the face, airway, eyes, paws or perineum go immediately, and every burn gets a re-check at 24 hours because partial-thickness burns deepen over the first day.