There is something irksome to me about the nature of food intended for companion animals, in that all too often I note it is increasingly marketed toward the needs of the people, not so much the animals themselves. While I can appreciate the move away from the processing of old, cramming into these things which these animals have no need in their diet just to sell more product - effectively filler - is tiresome. There is a reason these additions and supplements are not seen in ex situ conservation or even zoo dietary plans for related organisms.