Zinc serves two broad functions: enzyme function and protein synthesis. Dogs need zinc for healthy coats and for normal pigmentation of the coat hair. Boréal Palatable Zinc Supplement For Dogs contains ZINPRO® 180 from Zinpro Performance Minerals®, a patented organic source of zinc for animals, made by linking the amino acid methionine with zinc to form a structure that can be absorbed directly into the bloodstream. ZINPRO® (zinc methionine complex) is a nutritional feed ingredient for animals that contains organic zinc. The trace mineral zinc is required by animals for numerous functions including: immunity, reproduction, skin and hoof integrity, muscle development, milk production and eggshell quality. In addition, when an animal has the proper balance of organic trace minerals it is better able to cope with the challenging effects of stress.