Keep Charlie trim, feed a good quality food and enjoy him. (If you are inclined, you can learn about supplements, limited vaccinations and other things that may be helpful.) Best case scenario that I can tell you is one of my Cavaliers - Darby - who was diagnosed with a murmur at 18 months, started on enalapril (you Brits use Fortekor, another ACE-I instead) at almost 8, and was put down at over 1