Shasta is approx. 12 years old, she is very active and climbs many flights of stairs everyday as well as walk over an hour a day in nature. She was getting a little heavy on certain foods, as well as having gas. We switched her often in order to clear up the problem.....finally a real solution this dehydrated. Food, 2 of my friends with different breeds are on it. So I listened and that day bought a box. It was very obvious after 2 meals how much she enjoyed it and how much it helped her, at night too, her legs will cramp up... Not anymore. I spread the wonderful news of this revolutionary way of food for pets. Love it!