My dogs have been on raw for years. although I don't have cats I do have friends that do and when they saw how my dogs were so healthy on raw they decided to switch their cats. So far not one of them would ever go back to cat food of any kind. The cats have no health issues, had no problem with the switch either. They eat hamburg, chicken hearts and giblets, beef,chicken pieces, eggs, and some mashed veggies 2X per week. Any meat the family has they eat it raw. Also get tuna and salmon often. Might be something else they feed them that I am not thinking of, but I do notice how shiny and well fed those cats are, less shedding too and I had no clue cats shed. No hairball problems ever, not quite sure what they meant when they explained hairballs.