🚨 If symptoms are present — go to emergency vet NOW. ASPCA Poison Control: (888) 426-4435 (24/7)
Bee Sting & Anaphylaxis in Dogs
A single bee or wasp sting usually causes localized pain, swelling, and mild distress in dogs. The danger escalates in two scenarios: anaphylaxis (severe allergic reaction) in sensitized dogs, which can be fatal within minutes; and envenomation from multiple simultaneous stings (swarm attacks), where the cumulative venom dose causes systemic toxicity. Either situation is a veterinary emergency.
Sign in to log this event to your dog's health record.
A $95 consultation fee applies to ASPCA Poison Control calls.
⚡ Immediate Actions
- 1For a single sting with mild swelling only: remove stinger by scraping sideways (don't squeeze), apply cool compress, monitor closely.
- 2If swelling spreads to face/throat or the dog shows difficulty breathing, pale gums, or collapse — go to emergency vet immediately.
- 3Call ASPCA Poison Control (888) 426-4435 if multiple stings occurred.
- 4Do NOT give human antihistamines (Benadryl) without confirming dose with your vet first.
- 5If you have a veterinary-prescribed epinephrine auto-injector, use it per your vet's instructions and still go to the vet.
- 6For swarm stings: treat as a critical emergency regardless of whether anaphylactic signs are present.
Symptoms & Timeline
Local reaction (immediate, most common)
- Sudden yelping or pawing at the face, mouth, or body
- Localized swelling at the sting site
- Redness and hives at sting site
- Mild drooling
Anaphylaxis (within 5–30 minutes, life-threatening)
- Hives spreading across the body
- Facial and muzzle swelling (angioedema)
- Vomiting and diarrhea
- Pale or white gums
- Rapid, weak pulse
- Difficulty breathing and collapse
How Bee / Wasp Sting (Venom & Anaphylaxis) Affects Dogs
Bee venom contains melittin (destroys cell membranes), phospholipase A2 (breaks down phospholipids, triggering inflammation), and histamine (causes local vasodilation and pain). Anaphylaxis is an IgE-mediated Type I hypersensitivity reaction in which mast cells release massive amounts of histamine, causing vasodilation, increased vascular permeability, and bronchoconstriction. In swarm attacks, even a non-allergic dog can suffer direct venom toxicity to red blood cells, kidneys, and the cardiovascular system.
What Your Vet Will Do at the Clinic
Step-by-step protocol:
- 1Epinephrine injection (adrenaline) for anaphylaxis — first-line treatment
- 2IV antihistamines (diphenhydramine) and corticosteroids
- 3IV fluid bolus to treat anaphylactic shock
- 4Oxygen supplementation if respiratory compromise
- 5Hospitalization and monitoring for 12–24 hours post-anaphylaxis
- 6For swarm stings: CBC, chemistry panel, and urinalysis to assess hemolysis and kidney function
Frequently Asked Questions
Is Benadryl safe for dogs after a bee sting?
Diphenhydramine (Benadryl) at 1 mg/kg can be given for mild reactions if your vet approves. However, it is NOT adequate treatment for anaphylaxis — that requires epinephrine. Always call your vet before administering any medication, and go to the emergency vet if symptoms are progressing.
My dog was stung inside the mouth — is that more dangerous?
Yes. Stings inside the mouth or throat can cause local swelling that obstructs the airway even without systemic anaphylaxis. Any sting inside the mouth warrants immediate veterinary evaluation.
How many stings is too many for a dog?
As a rough guideline, more than 10–15 stings per kilogram of body weight can cause systemic venom toxicity, even in non-allergic dogs. A 10 lb (4.5 kg) dog could be in danger after 45–65 stings. Any swarm attack should be treated as an emergency.
🛡️ Emergency vet bills average $1,500–$5,000
Most US dog owners pay out of pocket. Pet insurance can cover 70–90% of unexpected emergency costs.
Sponsored · EverDogParent earns a referral fee if you purchase a plan
🐾
Log what happened — keep a record for your vet
Free health journal: note symptoms, timing, and vet advice. Searchable history for future reference.
Create free account →No credit card required · Works in your browser