I need to find a canning company?

I make homemade dog food (the crunchy kibble kind) and sell it at farmers markets. I would like to add a soft food but I need to find a company who will mix my ingredients and can the food in aluminum cans like the dog food you see on the store shelves. I live in Iowa but do not know what to search for? If anyone knows of any company websites or company names that do this work in reasonably small batches please let me know! Thanks