Esbilac does not cause juvenile nutritional cataracts. This is not to say that puppies fed Esbilac will not develop cataracts. There are many types of cataracts, and even the most nutritionally correct diet cannot prevent hereditary cataracts from forming. If the puppies are overly stressed, ill, or on antibiotic therapy they may still develop cataracts because these things can make it difficult for their bodies to benefit from the nutrients in their diet. Nutritional cataracts tend to resolve or reduce in severity by eight weeks of age. In many instances they may almost completely disappear by the time a dog is six to twelve months old. From 1988 to 1989 PetAg sponsored a study at Colorado State University to find what was causing cataracts in puppies fed a commercial milk replacer. Through these studies it was determined that by adding the essential amino acids L-arginine and DL-methionine the instance of cataract development was eliminated. All Esbilac (powder and liquid) produced a