Sorry Misfit, for getting off subject. With any of those better formula dog foods. If it has a high protein source especially fish based. Check the moisture content. I believe you want at least around 12 percent moisture. Reason those Fish based kibbles and some others have such lower moisture contents. Is to give the feed more shelf life. More moisture, the sooner it may spoil on the shelf or grow some sort of fungus among us. LOL

The amount of Ash may have some bearing as well. Not sure if Ca Jack mentioned that in that blog. I think to much ash or not enough is bad for cats. That the ash content is what makes cat food bad to feed dogs. Not sure about all that anymore. If wrong I stand corrected. Cheers