Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

My outdoor cat gets stung by wasps 2-3 times yearly — could this cause lasting damage?

Cats · Emergency guide

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Repeated stings increase anaphylaxis risk. Each exposure sensitizes the immune system, making future reactions potentially more severe. Immediately contact ASPCA Poison Control (888-426-4435) if you notice facial swelling, vomiting, or breathing difficulties. Consider keeping the cat indoors during peak wasp season to prevent cumulative harm.

Why is this dangerous?

Bee and wasp venom contains proteins and peptides that break down cell membranes and release histamine. Locally this means pain and swelling; systemically it can mean hives, vomiting, low blood pressure and anaphylaxis.

Pets are stung most often on the muzzle, mouth and paws because they chase or snap at insects — and swelling in the mouth or throat can obstruct breathing within minutes.

Why speed matters

Delaying care significantly worsens outcomes. Some signs appear hours or days later, so "looks fine right now" is not a reason to wait.

Signs to watch for

  • Yelping, pawing at the face, sudden head shaking
  • Localised swelling of the muzzle, lip or paw
  • Hives, red welts, intense itching
  • Vomiting, drooling, difficulty swallowing
  • Noisy or laboured breathing, collapse (anaphylaxis — emergency)

What to do right now

  1. Scrape a bee sting out sideways with a card; do not squeeze it — that injects more venom.
  2. Apply a cold pack wrapped in cloth for 10 minutes to reduce swelling.
  3. Go to the vet immediately for any sting inside the mouth, or if the pet vomits, wheezes or collapses.
  4. Antihistamines are not enough for anaphylaxis; only a vet can give adrenaline and fluids.
If your pet shows any of the signs above, go to the nearest emergency vet now and call ahead.

The step-by-step response, from the first minute to the vet visit, is in our Bee, Wasp & Hornet Stings emergency guide.

Open the full emergency guide: Bee, Wasp & Hornet Stings →