Dog Heart Health: Keep Your Dog's Heart Strong

Dogs hide problems well, and heart issues can creep up slowly. A few clear signs, small habits, and regular vet checks can make a big difference. This page gives practical, no-nonsense tips to spot trouble early and help your dog live a longer, healthier life.

Common warning signs

Watch for these specific changes: a persistent cough (especially at night), tiredness after short walks, fainting or stumbling, swollen belly, or a sudden loss of appetite. Check gums — pale or blue-tinged gums mean less oxygen in the blood. Also note breathing: a resting respiratory rate consistently above 30 breaths per minute at rest or while sleeping is worth mentioning to your vet.

Quick checks you can do at home: feel the pulse at the inside of the hind leg near the groin or just behind the front leg at the chest wall. Normal resting heart rates vary by size — roughly 60–100 bpm for large dogs, 80–120 for medium, and 100–160 for small breeds. If you count a resting rate far outside those ranges or notice irregular beats, call your vet.

Simple steps to protect the heart

1) Regular vet visits and screening: Annual exams catch early murmurs. For breeds prone to heart disease — like Cavalier King Charles Spaniels (mitral valve disease) or large breeds like Dobermans (dilated cardiomyopathy) — ask about earlier or more frequent checks and an echocardiogram when recommended.

2) Diet and supplements: Keep weight in a healthy range. Foods rich in omega-3 fatty acids (EPA/DHA) help heart health and lower inflammation. Talk to your vet about proper dosing; too much fish oil can cause side effects. High-quality dog diets that match age and activity level matter more than trendy ingredients.

3) Exercise and routine: Consistent, moderate activity keeps the heart strong. Avoid sudden intense bursts if your dog already shows signs of cardiac disease. Small daily walks beat occasional marathon sessions.

4) Prevent parasites and dental disease: Heartworm prevention is essential — heartworms directly damage the heart. Poor dental health lets bacteria into the bloodstream, which can affect the heart over time. Brush teeth when you can and use vet-recommended preventives.

5) Stress, calmness, and gentle bodywork: Chronic stress can harm heart health, so keep routines predictable and calming. Canine massage helps circulation and relaxation but avoid deep pressure over the chest — use a certified animal massage therapist when possible.

If you notice any worrying signs, don’t wait. Early diagnosis often means better treatment options and a better quality of life. Keep notes on symptoms, activity changes, and any meds — that info makes vet visits more useful. Small daily choices add up fast when it comes to your dog’s heart.