IANAD, but I imagine there are differing levels of quality control and differing "inactive ingredients" that may behave/metabolize differently. My doggo can't

IANAD, but I imagine there are differing levels of quality control and differing "inactive ingredients" that may behave/metabolize differently. My doggo can't eat my grapes or onions, so I'm not going to eat his kibble or Heartguard. :)