Copper is an important topic for many reasons. It is being recommended for deworming again; copper (sulfate) has a historical use as an anthelmintic. Some people and publications are recommending that copper be added to the diets of sheep and goats. Copper is always a good topic for sheep producers, since sheep are the species most susceptible to copper toxicity. Raising sheep and goats together is problematic from the standpoint of copper. This is because sheep and goats differ significantly in their copper requirements, as well as their tolerance for excess copper in their diet. This power point gives a good overview of copper in sheep and goat diets.