I feed my multi cat family Simply Nourish, which is Petsmart's brand of cat food...dry. Supposed to be equivalent or very similar to Blue Buffalo. I just went thru FHL with my big boy Chaddy, but in the ensuing weeks I have several cats vomiting. Now I know that in a multi cat environment there is generally kitty vomit somewhere at periodici intervals but I have several who appear to be vomiting and appear lethargic and just not up to par. Because food is the common denominator I thought I would see if anyone else is feeding their kitties this food and if so have you noticed any problems. They love it and have thrived on it but something keeps nagging at me that it might be the food and I know there always has to be a first batch of kitties alert others to the possibility. I began thinking about it when I saw the article on Beneful dog food. Thanks to anyone who might have some thoughts or takes the time to answer.