A–Z topic · H
Heart disease in dogs
Quick answer
**Heart disease is common in older UK dogs** — especially small breeds like Cavalier King Charles Spaniels. Warning signs include **coughing, tiring on walks, and breathlessness at rest**. Early vet diagnosis and medication can significantly improve quality of life.
Key takeaways
- Coughing (especially at night or after rest), tiring easily on walks, resting breathlessness, reduced appetite, weight loss, and fainting. A swollen belly may indicate fluid accumulation.
- Cavalier King Charles Spaniels are prone to mitral valve disease. Dobermanns and Boxers can develop dilated cardiomyopathy. Any breed can develop heart problems — especially with age.
- Many forms can be managed with lifelong medication, diet, and exercise modification — improving quality of life. Early diagnosis before severe symptoms helps most.
The full guide
Causes, symptoms, treatment options and when to call your vet — in the complete plain-English guide.
Frequently Asked Questions
- What are signs of heart disease in dogs?
- Coughing (especially at night or after rest), tiring easily on walks, resting breathlessness, reduced appetite, weight loss, and fainting. A swollen belly may indicate fluid accumulation.
- Which dog breeds get heart disease?
- Cavalier King Charles Spaniels are prone to mitral valve disease. Dobermanns and Boxers can develop dilated cardiomyopathy. Any breed can develop heart problems — especially with age.
- Is heart disease in dogs treatable?
- Many forms can be managed with lifelong medication, diet, and exercise modification — improving quality of life. Early diagnosis before severe symptoms helps most.