Cardiomyopathy is a condition in which the heart muscle weakens gradually for reasons that are not yet understood. Unfortunately, there is no cure. As with any new puppy, your Deerhound’s heart should be checked by your veterinarian as soon as you get it. After that, set up an examination schedule so your dog’s heart is checked regularly. The exams should get more frequent as your dog ages. Be sure to consult with your veterinarian should your dog have exercise intolerance or develop a cough; heart disease can sometimes be managed for a significant length of time, but only if it’s diagnosed early.