I'm 77, got a 5 month old American Lab pup back in January two weeks after our 12 year old Lab died. The pup's hunting this year and is good for his age but requires a lot of exercise whether it's a hunting day or not. He needs about a 1/2 hour of hard work every morning which is good for both of us but If I could to do it over I'd have looked a little longer for an older dog.