My dogs are pretty picky about their dog food. I only buy name brands and I only buy the chicken flavor. When I buy the beef flavor, they get upset stomachs.
So, I have tried to stick with chicken dog food for my beloved pets. They especially like the Purina brand dog food that is in the red bag and has big chunks of chicken in it. They gobble down the Purina dog food and I have noticed that they pick out the big chunks of chicken first and then eat the rest.