Symptoms of dog heart disease. Dog heart disease has become the second killer after cancer.

Jul 26,2025
5Min

The heart is responsible for the pumping function of sending blood to all parts of the body. If the pumping function cannot operate normally, it will not be able to transport blood to the lungs and the whole body, and it will not be able to recover the blood returned from the lungs and the whole body. , thus causing reduced blood flow and congestion. According to statistics, 10 to 15% of dogs suffer from varying degrees of heart disease. Moreover, it has become the second largest killer of dogs after cancer.

Dog heart problems are more serious than humans

There are too many congenital heart diseases caused by reproduction problems alone, heart problems caused by injury and infection, heart failure, and the heart disease of dogs after middle age. There are many problems.

Small/toy breed dogs are prone to heart problems, such as common Chihuahuas, Pomeranians, Poodles, Cavalier King Charles Spaniels, Boston Terriers and Dachshunds.

Some large breed dogs are also prone to heart problems, including: Spotted, Doberman, Boxer, Great Dane, Old Shepherd, Newfoundland, Alaskan, etc.

Common signs of heart disease in dogs

Cough

Coughs caused by respiratory infections usually resolve within a few days with simple treatment. Coughs caused by heart disease are different. This kind of cough usually occurs after the dog exercises or at night.

Shortness of breath

This is perhaps the most well-known sign of heart disease. When the heart loses pressure to inject blood into all parts of the body, the lungs are forced to work at high load to seek more fresh oxygen and more blood flow.

If your dog keeps panting at some "weird" times, such as when it's not very hot, not just after exercise, or when sleeping or resting, you need to pay attention!

Loss of Appetite

Loss of appetite can be caused by many conditions that make dogs uncomfortable, including heart disease. Because of changes in health, dogs will lose interest in food.

Weight loss or weight gain

Pets with heart disease will not lose weight immediately, and sometimes even gain weight despite loss of appetite. But in the advanced stages of heart disease, weight will drop again.

Weight gain is also different from other forms of obesity. It is more likely to be a bulging and swollen belly. This is a buildup of fluid in the abdomen due to blocked blood flow and poor circulation.

Easy to fatigue

Because of the low efficiency of the heart, it is difficult for the heart to provide oxygen and other nutrients to other parts of the body, resulting in dogs with insufficient physical strength and easy to become fatigued.

Changes in Behavior

Dogs with heart disease may also behave differently. they mayLikes to be alone, is depressed, or has no interest in toys that he liked before.

Fainting

If your dog suddenly falls or faints, you need to seek medical help immediately. This can often be a sign of a serious health problem, such as heart disease.

There are many causes of heart disease. Congenital and hereditary heart disease is a big problem, and the aging of the body of middle-aged and elderly dogs is a big problem. There are many types of heart disease. In addition to surgery, many of the symptoms can only be relieved through health care products and medicines.

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