This KB Mix contains only salmon as a protein source. Salmon is a good source of omega-3 fatty acids and vitamins that are much less common in meat. The mix contains only natural ingredients, without artificial additives. This mix is ??not complete on its own; variety is necessary for a balanced diet. Caution: Fatty fish species contain the enzyme thiaminase, which breaks down vitamin B1. Therefore, it is recommended not to give fatty fish to a dog more than once a week.