Cat Bleeding and Wounds: How to Stop It and When to Worry

A small amount of blood goes a long way on a tiled floor. Thirty millilitres — two tablespoons — can look like a crime scene, and owners arrive convinced their cat is dying when the wound is a torn claw. The opposite also happens: a cat bite on the flank, two neat holes and almost no blood, is far more dangerous than it looks and becomes a painful abscess within 48 hours.

The skill that matters is telling the three kinds apart, applying pressure properly, and knowing which wounds can wait.

How urgent is it? Three tiers

• Go now. Blood that spurts with the heartbeat, or soaks a pad within minutes and keeps coming. Pale white or grey gums, a weak or racing pulse, cold ears and feet, collapse, or laboured breathing after an injury. Any wound on the chest or belly that shows tissue underneath. A crushed or degloved limb, a torn tail, an eye injury, a bite from an unknown animal, or an object still embedded. Bleeding that has not stopped after ten minutes of firm pressure.
• Go today. Any bite from another cat, even a single puncture. A cut over a centimetre that gapes. A wound contaminated with soil or a chemical. A torn nail with the quick exposed and still oozing. A swollen, hot, painful lump a day or two after a fight.
• Watch. A superficial scratch that has stopped bleeding, a nicked ear tip that has dried, a clipped nail quick that stopped within minutes. Clean it, photograph it, check twice a day, and see a vet if redness, swelling, discharge or smell appears.

What the blood is telling you

Bright red blood pulsing in jets is arterial and can empty a cat in minutes; a cat holds about a coffee cup of blood per kilogram, so roughly 300 millilitres in a five-kilo cat. Dark red blood flowing steadily is venous — slower, still serious.

Lift the lip: normal gums are salmon pink. White, grey or muddy means the cat is losing perfusion and needs a vet now, whatever the wound looks like. Blood from the mouth, nose, urine or stool needs the same day: internal bleeding looks nothing like a cut.

What to do right now

1. Protect yourself first. A hurt cat bites. Drop a thick towel over the cat, wrap the whole body including the front legs, and only then handle the injured part.
2. Apply firm, continuous pressure with a clean cloth or gauze pad directly on the wound. Press hard enough that bleeding slows, and hold five minutes without lifting to check; every peek restarts the clock.
3. Add layers rather than removing them. If blood soaks through, put another pad on top and keep pressing. Pulling the first one off tears the forming clot.
4. Elevate the limb above heart level while keeping pressure on.
5. Bandage to hold the pad once bleeding slows, using self-adhesive wrap snugly but not tightly: you must be able to slide a finger under it.
6. Rinse a dirty wound with running tap water or saline for a few minutes before covering, unless it is still bleeding heavily. Water is the right first cleaner; antiseptics are not.
7. Keep the cat warm with a blanket, put it in a carrier, and drive. A bleeding cat loses heat fast and shivering worsens shock.

What not to do

• Do not put a tight tourniquet on a cat's leg. Cats have small limbs and little collateral circulation; a tourniquet left on causes necrosis. Direct pressure and a pressure bandage are the standard.
• Do not pour hydrogen peroxide, alcohol, iodine or Dettol into a wound. They damage tissue and delay healing.
• Do not pull out an embedded object. A stick, glass shard or tooth may be plugging the vessel. Pad around it and let the vet remove it.
• Do not probe a puncture with a cotton bud or squeeze it to see how deep it goes. You push bacteria in.
• Do not use human antibiotic cream, especially anything containing zinc, and never superglue a wound shut. Gluing traps infection inside.
• Do not let the cat lick the wound. Cat mouths are full of Pasteurella; licking is how a small bite becomes an abscess. Use a cone.

Cat bites are worse than they look

A cat's canine tooth is a fine needle. It punches bacteria deep into muscle and seals the skin behind it, so the surface closes over an infection. Pasteurella multocida is present in most cat mouths and produces swelling, heat and pain within 12 to 48 hours; by then it is often a pocket of pus needing drainage and antibiotics. Bites on the tail base, legs and face are classic. Bites from a cat of unknown vaccination status also raise rabies and feline leukaemia questions. See health for how an abscess develops.

What to tell the vet, and what happens next

Say what caused the wound and when, whether the cat is vaccinated, whether it goes outdoors and fights, and whether it is on steroids or NSAIDs. The vet will clip the fur, flush and decide whether to close. Fresh clean cuts can be sutured within six to eight hours; older or contaminated ones are left open to drain. Expect pain relief, antibiotics, and a cone. Deep or crushing injuries get X-rays for fractures, and severe blood loss may need fluids or a transfusion.

Healing and prevention

Most uncomplicated wounds close in 10 to 14 days, and sutures come out then, not before. Check daily for spreading redness, discharge, smell or reopening: those mean infection. Keep the cone on until the vet says otherwise — cats reopen wounds within minutes. To reduce the next one: keep cats in at dusk, neuter, and never let a cat out with an open wound. First-aid kit contents are covered in care.

This is general information, not a diagnosis. Call your vet or an emergency clinic.

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