Most cat cuts from glass stop bleeding with 10 minutes of steady, uninterrupted pressure, and the cats that do badly are usually the ones where the pressure was lifted every 30 seconds to look. Press with a folded gauze or a clean cloth, both hands, body weight through the heel of the hand, and hold for a full 10 minutes by the clock. On the way to the clinic, do not probe the wound, do not tie anything around the leg as a tourniquet, and do not pour disinfectant into it. If blood is still running after 10 minutes of real pressure, or the cat is pale and quiet, that is a same-hour visit. The clock runs 0-1-2-6-24 hours.
Two numbers set the tone before you start. A cat holds 60-70 ml of blood per kilogram, so a 4 kg cat has roughly 250-280 ml in total; losing 25-30% of that, around 70-80 ml, is enough for shock. And a cat's heart runs at 140-220, so a fast, thready pulse with pale gums means the bleeding matters more than the wound looks.
The 10 minutes, done properly
Put a folded gauze pad, 4-6 layers, or a clean cotton towel over the cut and press down hard enough that the pad stays put when you lift your fingers. Do not lift it to check at 2 minutes, at 5 minutes, or when the cat complains. A clot needs 6-8 minutes of uninterrupted pressure to become firm, and every peek restarts that clock from zero.
If blood soaks through, add another pad on top and keep pressing; do not remove the first one, because the clot is stuck to it. Ten minutes of pressure that works looks boring: the cat protests, the pad darkens a little, and then nothing more comes through. Ten minutes that does not work looks like a pad soaking through in 60-90 seconds.
Three kinds of bleeding, three answers
Capillary and small vein bleeding oozes dark red and slows within 2 minutes of pressure. Arterial bleeding spurts in time with the heart, bright red, and will not slow while you press; it needs a vet within the hour, not a tighter bandage. Pad and nail-bed cuts bleed generously for 5-10 minutes and then stop, which is why they look worse than they are.
| Bleeding | What it looks like | Numbers | What to do |
|---|---|---|---|
| Capillary | Dark red, oozing, surface graze | Stops in 2-10 minutes of pressure | 10 minutes pressure, then a light dressing |
| Vein | Steady dark flow, fills the pad in 2-3 minutes | Pad changed after 10 minutes, not before | Pressure 10 minutes, vet within 2 hours |
| Artery | Bright red, spurting with each beat | Heart rate 140-220, CRT under 2 seconds | Firm pressure, vet within 1 hour |
| Pad or nail bed | Blood on the floor, one paw lifted | 10 minutes pressure, 24-hour dressing check | Wrap, cone, recheck at 6 and 24 hours |
Three things never to do
Do not probe the wound. Fingers and tweezers push a 2 mm shard 5 mm deeper, and a shard you cannot see is a shard you cannot judge. If a shard stands proud and can be lifted with the corner of a gauze, lift it; if it is in the tissue, leave it for the vet.
Do not use a tourniquet. A cat's limb is 2-3 cm across at the mid-forearm, and a band tight enough to stop arterial flow also stops venous return; tissue downstream starts dying within 2 hours, and the radial nerve sooner. Direct pressure is the correct tool at every size of cut.
Do not pour anything in. Alcohol, hydrogen peroxide, iodine tincture and antiseptic shampoo all damage the tissue that has to heal, and peroxide bubbles away the clot you just built. Flush with saline if you have it, cooled boiled water if you do not, and nothing else for the first 24 hours. Powder, flour and cobwebs belong in no wound.
Two checks that change the plan
The first is nerve and tendon function. Look at the toe: can the cat flex and extend it, does the toe withdraw when you pinch the skin between the pads, and is there feeling on the top of the foot. A cut on the back of the pastern that leaves the toes flat and floppy has taken a tendon, and that is surgery within 24 hours, not a bandage.
The second is retained glass. Glass shows on a radiograph when it is 1-2 mm or bigger and leaded or thick, but thin shards and window glass can be invisible; ultrasound finds pieces down to about 3 mm. A wound that keeps bleeding at 3 days, swells at 5 days, or drains at 7-10 days has something in it. Ask for imaging rather than another course of antibiotics.
The 6-8 hour suture window
A clean cut on a leg or flank closes best within 6-8 hours; after 12 hours the edges are contaminated and many vets leave the wound open or place a drain. Pad lacerations are usually not sutured at all, because the pad bears weight: they are bandaged, changed at 24 hours, and take 2-3 weeks to keratinise. Sutures, if placed, come out at 10-14 days.
Bandaging rules are the same for every wound. Change the dressing at 24 hours, then every 2-3 days, keep it dry, and check the toes for swelling twice a day: a bandage that is too tight makes the toes puff within 4-6 hours, and that is an immediate re-wrap.
Hour by hour
| Hour | What you do | Numbers to watch | Never |
|---|---|---|---|
| 0 | Firm pressure on a gauze pad, cat wrapped in a towel | Start the clock, hold 10 full minutes | Lift the pad to look |
| 1 | Clinic if bleeding continues, or if the cut is over 2 cm | 1-hour limit for spurting blood | Tourniquet, disinfectant |
| 2 | Wound assessed, flushed, closed or dressed | 2-hour target for deep or dirty cuts | Probing with tweezers |
| 6 | First look at the dressing, toes checked | Toes should be warm, not puffy | Re-bandaging tighter |
| 24 | Dressing change, appetite and gait check | Temperature 38.0-39.2 C | Letting the cat lick it |
Five steps tonight
- Press for 10 full minutes with a folded pad; add a pad rather than removing one.
- Look at the gums and count the pulse; pale plus fast means the clinic now.
- Flush with saline only, then cover with a non-stick dressing and a cone.
- Photograph the cut with a coin for scale, and note the time it happened.
- Check the toes twice a day, and book the 24-hour dressing change.
Glass injuries to the eye follow a different rule and cannot wait; see eye injuries from glass for the 1-hour threshold. For a cut that came with a fall or a collision, work through the trauma checklist first, and if the cat licked the substance that was in the glass, check the toxicity lookup.
Terms mentioned in this article
Frequently asked
How long should I press on a bleeding cut before going to the vet?
Ten minutes of uninterrupted pressure, timed by the clock. A clot needs six to eight minutes of steady pressure to firm up, and lifting the pad every half minute restarts that clock. If blood is still coming through after ten real minutes, or the cat has pale gums and a fast pulse, go in the same hour rather than pressing harder.
Should I take the glass out of the wound myself?
Only if a piece is standing proud and can be lifted with the corner of a gauze. Fingers and tweezers push a two millimetre shard five millimetres deeper, and a shard you cannot see is one you cannot judge. Deep glass is a job for good light, a probe and imaging; thin shards may need ultrasound because they do not always show on a radiograph.
Why not use a tourniquet on a cat's leg?
A cat's forearm is only two to three centimetres across, so a band tight enough to stop arterial flow also blocks venous return, and tissue downstream starts dying within two hours. The radial nerve is injured even sooner. Direct pressure on the wound controls bleeding without cutting off the limb, and it is the correct method at every size of cut.