Gastrointestinal Disorders in Pugs

A hiatal hernia occurs when part of the stomach pushes upward through the diaphragm into the chest cavity. In brachycephalic dogs, working hard to breathe against airway resistance creates unusually strong negative pressure within the chest with every labored breath. Over time, this repeated negative pressure is theorized to gradually pull part of the stomach upward through the diaphragm's opening, contributing to a hiatal hernia and the reflux symptoms that come with it, an airway-driven mechanism distinct from how this condition typically develops in a dog without breathing obstruction.

Symptoms can include regurgitation, chronic mild vomiting, reduced appetite, or signs of discomfort after eating, and can look similar to other digestive issues on the surface. What sets this apart is the pattern of symptoms tracking alongside BOAS severity and effort of breathing, which is why a full workup for chronic GI symptoms in this breed reasonably includes an assessment of airway status too. Management often addresses both systems together: treating reflux symptoms directly with dietary and medical management while also addressing the underlying airway obstruction, sometimes surgically, since improving breathing effort can reduce the ongoing pressure changes contributing to the digestive symptoms in the first place.

If you think your Pug has gastrointestinal disorders, the plan is three steps: write down what you have seen and when it started, book a veterinary appointment rather than waiting for the next flare, and take video of the behaviour or symptom before you go — the thing you are worried about rarely happens in the consulting room. Screening in the parents covers brachycephalic airway syndrome (boas), pug dog encephalitis, corneal ulcers.

What the vet visit should produce is a diagnosis and a written plan, not just reassurance: what is being ruled out, what the monitoring interval is, and which signs mean you come back sooner. Ask what the treatment costs across a year rather than per visit, because that is the number that decides whether you are managing this condition or reacting to it.

Between appointments, keep a short log — dates, what you saw, what changed. It is the single most useful thing an owner brings to a follow-up, and for gastrointestinal disorders it is often what separates a clear pattern from a guess.