The name is Hill's Science Diet.

They are a mid range brand. Pushed by the vets, as the co provides lots of scholarships for vets.

Go to their web site and check out the prescripotion diets. Here, I did some of it.
http://www.hillspet.com/zSkin_2/prod...=1180659498334

There is an ID dry and canned. It tells you what it is for.

There are other brands which offer prescription diets, as well. Royal Canin is another brand which offers the specialized diets. What's wrong with your dog?