Symptom: Swollen Face – When Should I Contact a Vet?
A swollen face can develop suddenly or gradually and may affect one side of the face or both. While some causes are relatively minor, others can be painful or even life-threatening, so any unexplained facial swelling should be checked by a vet.
Common signs include:
Swelling of the face, muzzle, lips or around the eyes
Redness or warmth of the affected area
Pain or reluctance to have the face touched
Drooling or difficulty eating
Squinting or swelling around one eye
Itching, rubbing at the face or pawing at the mouth
Some pets remain bright and alert, while others may become quiet, reluctant to eat or show signs of pain. If the swelling develops suddenly, is rapidly getting worse, or is affecting your pet's breathing, seek immediate veterinary attention.
'My pet's face is swollen' - Frequently asked questions
What are the common reasons that my pet's face is swollen?
- Insect stings or bites: bee or wasp stings and insect bites can cause sudden swelling, particularly around the muzzle or eyes.
- Dental disease: tooth root abscesses and other dental problems commonly cause swelling on one side of the face. Further reading: Dental Disease in Cats, Dental Disease in Dogs
- Trauma: bites, scratches or other injuries can lead to swelling and bruising.
- Allergic reactions: food, medications, insect stings or environmental allergens can cause facial swelling, sometimes quite rapidly. Further reading: Food Allergies in Dogs
- Abscesses, cysts or tumours: these can cause swelling that develops more gradually. Further reading: Cysts in Dogs
DOs - My pet's face is swollen, what to do at home:
- If your pet has difficulty breathing or the swelling is rapidly getting worse, contact your vet immediately and head to the clinic without delay.
- Keep your pet calm and prevent them from rubbing or scratching at the swollen area.
- If you can clearly see a bee sting, carefully remove it as soon as possible.
- Arrange a prompt appointment with your vet if the swelling persists, is painful, or your pet seems unwell.
DON'Ts - My pet's face is swollen, what not to do at home:
- Don't give human medications unless your vet has advised you to do so. Some can be toxic to dogs and cats.
- Don't squeeze or try to burst a swollen area. This can make the problem worse and increase the risk of infection.
- Don't delay contacting your vet if the swelling is getting worse, your pet seems painful, or they become unwell.
- Don't ignore facial swelling, even if it improves. Contact your vet for advice, as treatment may still be needed.
My pet's face is swollen - when is it an emergency?
Seek immediate veterinary attention if your pet:
- Has difficulty breathing or the swelling is rapidly getting worse.
- Develops swelling around the throat or neck.
- Collapses, becomes weak, or has pale gums.
- Has severe pain, significant bleeding, or a deep wound to the face.
- Has facial swelling following a bite, sting or injury and is becoming unwell.
Written by Gill Burkhill, Veterinary Surgeon, Animal Trust Vets CIC | Published July 2026 | Review date July 2029 | This advice is for UK pets only and is not a replacement for seeing a vet