Royal Canin Veterinary Diet Hydrolyzed Protein Small Breed Dry Dog Food is a highly palatable diet designed for small breed or toy breed adult dogs. It’s formulated with hydrolyzed soy proteins, composed of low molecular weight peptides, so they can be absorbed in the digestive tract with a reduced risk of triggering an immune reaction. Optimal amounts of B vitamins and amino acids reinforce your dog’s skin barrier. And Relative Supersaturation (RSS) methodology helps reduce the risk of struvite and calcium oxalate crystal and stone formation in the bladder. Plus, the specially designed dog kibble is made for miniature mouths, encouraging your small breed dog to chew thoroughly for tartar control.