Urgent — same day vet contact
Within 24 hours
Cat bite wound or abscess from a fight
Cat fight wounds are tiny on the surface but trap bacteria — book a vet visit promptly even if the cat seems fine; abscesses develop within 1–3 days.
Recognise the signs
- Small puncture marks, often on the face, neck, back end, or tail base
- Sudden limping or limp 1–3 days after a known or suspected fight
- Hot, swollen, painful lump (abscess)
- Lethargy, off food, fever
- Burst abscess with foul-smelling pus
- Hiding more than usual
First aid steps
- Check the cat thoroughly — clip fur if needed to see punctures.
- Bathe punctures with cooled boiled water and clean cloth.
- Restrict outdoor access until vet seen.
- Phone the vet — most bite wounds need antibiotics.
Do NOT
- Do not assume small punctures will heal alone.
- Do not pop a developing abscess at home.
- Do not give human painkillers.
When to phone the vet immediately
- Hot, swollen lump developing
- Abscess that has burst
- Lethargy, off food, fever
- Bites near eyes, throat, or genitals
Common causes
- Territorial fights between outdoor cats
- Entire toms most often involved
- Disputes over food, mates, or territory
What the vet will need to know
- Known or suspected fight, with timing
- Number and location of wounds
- Whether other cats in household have signs
- Vaccination status (FIV/FeLV exposure risk)
Aftercare
- Antibiotics and pain relief.
- Abscesses may need clipping, draining, and flushing under sedation.
- Buster collar to prevent licking.
- Recheck visit to confirm healing.
- Discuss FIV/FeLV testing for high-fight-risk cats.
Prevention
- Neutering reduces fight risk dramatically.
- Indoor or supervised outdoor cats have far lower bite injury rates.
- Avoid letting cats out at peak fight times (dawn, dusk, night).
- Multiple resources in multi-cat homes reduce in-home conflict.
Frequently asked questions
Why do small bite punctures cause big abscesses?
Cat teeth are sharp and narrow, leaving tiny wounds that close on the surface and trap bacteria underneath. Within 1–3 days, the area becomes a hot, swollen abscess.
Can I treat a cat abscess at home?
No — abscesses need clipping, draining, flushing, and antibiotics. Home treatment leads to chronic infection and often surgery.
Should I have my cat tested for FIV after a fight?
Discuss with the vet — FIV is transmitted via deep bites. Testing is sensible 8–12 weeks after a confirmed fight, particularly in unvaccinated outdoor cats.