I really don't know much about the senior foods. My friend has a dog who is 9 and the last time at the vet the recomended he be switched to senior food. I don't know that it has changed anything for him, except he doesn't seem to like it (it has been 3 mos. since he switched) Brutus is setter mix and has always been very active...they walk him 3+ miles everynight, he has lots of doggie friends to play with, they have a full size pool he swims in. Overall he is a very active dog. Maybe it was too soon to switch him.

On another level changing our girls food made a huge difference and that was just going from Iams to Sensible Choice...we switched about 6 mos ago and they are less gassy, there "presents" stick less and they seem to like it better. I definatly think food can make a difference in the dog.

Glad Angus is doing well!