The addition of excessive amounts of copper to commercially prepared milk replacers caused chronic copper toxicity in veal calves from two different Belgian farms. A possible mixing error by the feed company resulted in copper levels ranging from 120 to 159 mg/kg in the milk powder. On one farm, four animals died showing the typical clinical signs of chronic copper toxicity, including weakness, anorexia and severe icterus. Pathology and biochemistry of the calves and chemical analysis of the blood, milk powder and liver were performed to establish the diagnosis. In the liver, copper concentrations of 297 and 500 mg/kg fresh liver were found, which are indicative of a chronic copper intoxication.