Essential oils (fish oil) is also important. My pups eat a lot of salmon, mackerel, and tuna in oil.
At one time I noticed a reaction to eggs, so she no longer gets anything with chicken. No eggs, chicken livers, and read the ingredients.
If anyone is in the Dallas area, Metropet delvers right to the door.
My hound dog looks a lot like Homer.
What kind of hound? We're not really sure what he's mixed with... lab and ~something~. I think some kind of pointer because I've seen him spontaneously point when there's dove or a squirrel in the yard.