<p>Mitral and tricuspid valve disease is the most common cardiovascular abnormality in dogs; with high predisposition in canines of small and elderly breeds, mostly to male patients, of which some remain without clinical symptoms until they develop valvular insufficiency, and this can lead to congestive heart failure. The objective of this article is to carry out a clinical case report of a patient who presented to the PET CENTER veterinary clinic in Tunja Boyacá, corresponding to an 8-year-old male canine of the mestizo breed of small size, the reason for admission was abdominal distention. The clinical examination reported a tachycardia of 200 bpm and abdominal effusion, with positive succussion. Complementary tests were a blood count, blood chemistry, echocardiography, electrocardiogram, and non-invasive blood pressure measurement; he was diagnosed with mitral and tricuspid valve disease; for which hospital stabilization was performed.</p>
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