the Natural Retailer had a pet food query about source of meat in pet food. If the meat comes from a single source it can say so. If it says “meat”; “meat meal”, “animal byproduct” it can come from any source.
This is why I strongly encourage you to make your own food for your pets, and buy the ingredients from a local farmer. We now know you need to ask if their animal grain feed isnon GMO (does not have to be organic, just better to have no GMO). This may be impossible in some areas.