When hair remains in your cat's stomach without going through the digestive system, it can cause hairballs. Large amounts of hair can cause hairballs, but the majority of hair passes easily through the digestive system. In addition to causing pain and discomfort due to stomach aches and regurgitation, hairballs can also lead to digestive health issues, such as the loss of nutrients from regurgitated hairballs. While hairballs are more common in long-haired breeds, they can sadly affect any kind of cat. To help your cat get rid of ingested hair, ROYAL CANIN® Hairball Care in Gravy is designed to stimulate the intestinal transit passage, which gets rid of extra hair that would otherwise stay in the stomach. Maintaining your cat's ideal weight is another benefit of using ROYAL CANIN® Hairball Care in Gravy.