Royal Canin Labrador Retriever Dry Dog Food: Nutritional Support for Purebred Labs. This dog food is specifically formulated for purebred Labrador Retrievers aged 15 months and up. The right nutrition helps support the large build and maintain a healthy weight. Donut-shaped kibble slows down eating and the appropriate calorie and fat content promote growth and development. Prevent bone and joint issues with the right diet and nourishment for your Lab with Royal Canin.