Hill's Science Plan Feline Adult | Chicken | Perfect Digestion | VetXHill's Science Plan PERFECT DIGESTION Adult cat food with Chicken & Brown Rice contains ActivBiome+, a Hill's exclusive blend of prebiotics to help rapidly nourish & balance your pet's unique microbiome. Every cat has an entire ecosystem living within them the gut microbiome, full of billions of desirable and undesirable bacteria unique to your pet. With the right nutrients to help balance their microbiome, you can actually affect not only their