Meet Jager! Jager was first transferred to the Dayton cardiology department in Dec 2024 for trouble breathing. He was diagnosed with degenerative valve disease, a common age-related disease which causes the mitral valve in the heart to become thickened and leaky. In Jager, this caused severe heart enlargement and congestive heart failure. With medications, his congestive heart failure was controlled, but the disease continued to progress. In Jan 2026, Jager's mom took him to the University of Florida College of Veterinary Medicine for open heart surgery to repair his mitral valve. Since his surgery, he has been acting like a puppy! His heart has returned to near normal in size, and he is off of most of his cardiac medications!Dr. Kim Cook and the rest of the Dayton Cardiology team do recheck visits with Jager to make sure he is healing nicely and continue to monitor him. ... See MoreSee Less