I am concerned. I am new to the site and have been reading that science diet is some crap. I thought it was good food. I have switched food so many times and need help on a good food for my pups. My male (2yrs) which is the oldest has been switched from nutro max to purina to innova to science diet. All those foods made his stool loose except Science diet. What should I do? He is really bored with the science diet and it is showing in his weight. I really want them to have a good quality food. I am willing to try something else because it is almost time to buy more food. Any help will be appreciated.