I must first state that we were given this dog food by our Veterinarian. Our dog we adopted was severely overweight when we got her. Our goal was for our little pug to lose eighteen pounds, almost half her body weight! We did it through dieting and exercise and when she finally lost all the weight needed (about two years later after adopting her) our Vet gave us a bag of this dog food to try out as a congratulations. Our dog is not a picky eater so she did not have any problems when we switched over to the sample bag of this dog food. The reason our Vet recommended this dog food is because our little pug is older and starting to have back and hip problems. It seemed like when we had her on this food, it helped with her mobility though. She didn't seem as stiff when getting up after laying down, and it seemed like her joints are not bothering her as bad. On the downside this food is VERY expensive. After we used up our sample bag, I was convinced we needed to get her the big bag at the Vet. But after seeing the price tag compared to the Pedigree we had been feeding her, I decided we would just continue with the anti-inflammatory we had given her before and the cheaper dog food. If you have this in your budget you will definitely see a difference in your dog though!