Kingswood Senior Dog, Salmon with Spinach & Sea Buckthorn. A complete dry pet food for senior dogs aged 7+ years. Kingswood Senior Dog, Salmon with Spinach & Sea Buckthorn At Kingswood, we know how important your dog's wellbeing is. That's why our recipes are tailor made for your pooch's life stage, made with fresh fish and bursting with vegetables, herbs and vitamins. Made with a single source of protein, grain free recipe* and formulated with ingredients easy on sensitive tummies. The natural choice for healthy pets. * Grain free recipe. Grain Free recipe* With Prebiotics With Vegetable & Herbs. Made with 50% Salmon 22% Fresh Fish * Grain free recipe, made in a factory that handles wheat and other grains.