If your dog exhibits the following symptoms, take him to your veterinarian for an accurate diagnosis:

• A low-pitched cough that sometimes leads to gagging
• Breathing difficulties that include shortness of breath
• Reduced ability to exercise
• Noticeable weight gain or loss
• Swelling in the abdomen

These symptoms are common in other diseases, so it is important for your veterinarian to check for heart disease using some of the following methods:

• A stethoscope exam can reveal murmurs and fluid in the lungs
• Palpation can reveal unusual pulses
• X-rays reveal heart enlargement
• An EKG can identify heart enlargement and irregular rhythms
• Blood and urine tests can reveal heartworms and the condition of other internal organs

Heart disease typically causes the heart to enlarge, and this enlargement causes a loss of efficiency. The heart then begins to hold more fluid than it should and this is where the real problems begin. For this reason, veterinarians recommend feeding dogs a low-sodium food that will help reduce fluid build-up and make it easier for their hearts to work effectively.

For an accurate diagnosis and treatment options, always consult your veterinarian.