Plutos Chews are 100% NATURAL with high quality milk protein. They are lactose and gluten free with irresistible flavour. Doesn't splinter allowing dogs to chew and enjoy until the end. PLUTOS is hard enough to be enjoyed as a chew, but gets sufficiently soft with saliva and biting action to be safely chewed by different dog ages and sizes. Plutos contains casein a milk protein which has an antibacterial effect, neutralizes cavities and bacteria, prevents formation of teeth plaque and eliminates bad breath. Fat loss - Casein slow digestibility promotes fat loss because increases metabolism and satisfaction feeling. Satiety - it takes a lot of effort to digest Casein protein, therefor creates a feeling of satiety Safety. PLUTOS chews were especially designed not to splinter preventing teeth from breaking, choke hazard or stomach/intestine blockages.