Oliver is a 10 year old Cavalier King Charles Spaniel, whose mum noticed that he had started coughing quite a bit recently. His vaccinations were all up to date so at his regular six-month senior check up, his mum mentioned the coughing problem to our veterinarian. Our veterinarian examined Oliver and found nothing abnormal so we decided to take some x-rays of Oliver's chest. The x-rays showed that Oliver had a rather large heart, which contributed to his breathing difficulties and coughing. We gave Oliver some medications to help him breath easier.