food, including vitamins and minerals. Some people are fussy about such things, not even wanting additives in their pets’ food. But pet food manufacturers haven’t been shy about adding nutritional supplements to cat food.
One amino acid that has been added to most cat food since the 1980s is taurine, which has been found useful in preventing blindness and heart disease. As time goes by and we learn more about animal nutrition, it is likely that more additives will be found in pet foods.