Who owns what?

I'm sure it's available online somewhere, but suffice it to say that there are some very big corporations that own a large number of pet food brands. Del Monte (manufacturer of Milk Bone, Meow Mix, Kibble and Bits brands of petfoods, as well as human snack, fruit cups, etc), Proctor and Gamble (who just bought Natura petfood products, also manufactures Iams and Eukanuba brands), Colgate Palmolive (the maker of Hills, Science Diet - including prescription diets - petfoods), Mars (also the maker of Snickers candy bars). Amazing isn't it?