Since Little Buddy turned 1 year old, we began feeding him Adult dog food. I've had him on the Chicken Soup for the Pet Lovers Soul brand. My question is would it be okay to feed him other brand foods as well, such as Fromm and Wanaewe on occasion to get in all the nutrients and acidophilus? I don't want to upset his stomach. Though, those are the only brands that seem to not contain any chemicals and to be safe for him to consume.