100% natural, dehydrated cow hooves. The wall of the cow hoove is made up of mostly keratin which means they are naturally high in protein. Hooves are a customer favourite because they are long lasting, chewy and can be filled and frozen creating an even longer lasting treat. To create fun around feeding time, fill your hoove with your dogs raw food portion. Due to the shape and texture, hooves also scrape away tartar/plaque and massage the gums.