VetSpec Working Dog Adult Formula is an outstanding Veterinary Specification Healthy Dog Adult supplement in a Super Premium dog food including 44% Chicken with added rice, vegetables and herbs. It is a superb product for working dogs. The specialised supplements include Biotin, and other associated nutrients to improve the coat and promote a supple skin for dogs that that have problems in this area. The formula also contains a joint supplement to optimise joint mobility. The prebiotics in the supplement help to maintain a healthy gut in dogs with sensitive stomachs. It is wheat gluten free with no added artificial colours, preservatives or artificial flavours