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Why is my dog reverse sneezing, choking, and foaming at mouth?

Updated On September 23rd, 2025

Pet's info: Dog | Belgian Malinois | Male | unneutered | 1 year and 2 months old | 55 lbs

My dog keeps like reverse sneezing and almost like he’s choking on something or it’s caught in his throat and had foam at his mouth

1 Answer

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on October 16th, 2020

Hi and thanks for your request. Reverse sneezing is common in dogs. It is not harmful. The cause of a reverse sneeze is unknown, but allergies seem to play a role and environmental odors such as smoke, perfume and potpourri. You should have your veterinarian give your dog an exam and rule out other causes of abnormal breathing, such as an upper respiratory tract infection, collapsing trachea, nasal tumors or polyps, foreign bodies in the nasal passages or mouth and others. Sometimes blood tests, allergy tests or radiographs are necessary to rule out other conditions that can cause similar symptoms. Most reverse sneezing cases do not require treatment. During a reverse sneezing episode you can try to gently stroke the neck and try to calm your dog. If the episodes last longer than a minute your vet may prescribe anti-inflammatory, anti-histamine or decongestant medications.

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