The Royal Canin pet food GmbH is since 2002 the Mars / Master Food. Mars / Masterfood turn produces kindly and so inferior cat food as Kitekat, Whiskas and Sheba. And more importantly: You are conducting experiments on animals and / or nutrition studies. As the "guinea pigs" while living, everyone can calculate yourself or like to ask once. Certainly Mars / Masterfood any readily gives you information and then occupied their own statements as well.
On the other hand, there are many manufacturers who renounce such practices. Almo Nature Yarrah and over Interquell through to dm-drogerie markt. In this respect it might be worth, and once to consider the side of the production when buying food.