Bee and Wasp Stings in Pets — What to Do
Bee and wasp stings are a common summer hazard for dogs and cats in the UK, particularly for curious dogs that snap at flying insects. For most pets, a single sting causes temporary, localised pain and swelling that resolves within a few hours. However, some pets — like some humans — can have a severe allergic reaction (anaphylaxis) to bee or wasp venom, which is a life-threatening emergency requiring immediate veterinary treatment. Multiple stings, stings inside the mouth or throat, and stings in puppies or kittens require prompt veterinary attention regardless of apparent severity.
Signs of a Normal Sting Reaction
After a bee or wasp sting, most dogs and cats show localised symptoms at the sting site: sudden yelping or pawing at the affected area, swelling and redness (visible in thinly-haired areas, or detectable as a raised warm lump under the fur), and licking or biting at the site. The face and paws are the most commonly stung areas.
Mild swelling at the sting site, some distress immediately after the sting, and gradual improvement over 1–2 hours is a normal response. Remove the bee sting if visible (it appears as a small dark thread-like object embedded in the skin) by scraping it out with a credit card rather than pinching with fingers, which can squeeze more venom in. Cool the area with a damp cloth or cold pack wrapped in a towel.
Signs of Anaphylaxis — Emergency Signs
Anaphylaxis is a severe, life-threatening allergic reaction that can develop within minutes of a sting in sensitised animals. Signs include: sudden collapse or extreme weakness; pale, white, grey, or blue-tinged gums; vomiting and/or diarrhoea; rapid, laboured or noisy breathing; severe facial swelling, particularly of the muzzle, eyes, and throat; trembling; seizures; and loss of consciousness.
Anaphylaxis can develop in a pet that has previously reacted normally to a sting — a previous mild reaction does not guarantee a mild reaction next time, as subsequent exposures can trigger increasingly severe responses. If any of these signs appear after a sting, this is an immediate veterinary emergency. Drive directly to your vet or the nearest emergency practice.
Stings in the Mouth, Throat, or Nose
Dogs that snap at bees and wasps may be stung on the tongue, inside the mouth, or in the throat. This is significantly more dangerous than a skin sting, as swelling in these areas can obstruct the airway even without a full anaphylactic reaction. Signs of a mouth or throat sting include: drooling, pawing at the mouth, swallowing repeatedly, visible swelling inside the mouth, and increasing difficulty breathing or swallowing.
Any suspected sting inside the mouth or throat should be assessed by a vet without delay, as airway swelling can develop rapidly and may require emergency intervention. Keep your dog as calm as possible during transport to avoid increasing oxygen demand.
Multiple Stings
Multiple stings — from disturbing a nest or inadvertently walking through a wasp swarm — can cause systemic toxicity even without an allergic response. Multiple bee or wasp venom deposits can cause vomiting, tremors, weakness, and in severe cases, kidney damage and haemolytic anaemia from the haemolytic components of bee venom.
If your pet has been subjected to multiple stings (more than 10–15 for a medium-sized dog), contact your vet even if the animal initially appears reasonably well, as delayed symptoms can develop over several hours. Move your pet away from the nest area immediately, as distress signals from stung individuals can attract further attack. Be careful not to get stung yourself when helping your pet.
Can You Give Piriton (Chlorphenamine) to Dogs?
Piriton (chlorphenamine) is an antihistamine that is sometimes recommended by vets for mild allergic reactions in dogs at a specific dose. Some owners keep it on hand in households with dogs known to be reactive to stings. However, antihistamines alone are insufficient treatment for anaphylaxis — they do not address the cardiovascular collapse or airway constriction that makes anaphylaxis fatal.
Never use antihistamines as a substitute for veterinary assessment in a moderate or severe reaction. If in doubt, call your vet first and ask for their specific advice for your pet's weight and the situation. Do not give human antihistamines to cats without explicit veterinary guidance, as many formulations are toxic to cats.