Hi john P-
Lol! “Toppers” are just as Dori described, something added in. I don’t really like that term either because it sounds like you just sprinkle something on top of their meal. I use canned, fresh, and dehydrated added to their kibble. A meal mixer might be a better description. I wouldn’t recommend doing that either until you figure out if the kibble agrees with him first. But you were looking for a food with pork and so far the California Natural is great for my dogs with sensitive digestion. I hope you can sort through all this info and find some good choices for you and your pup!
