Some things I do to mix it up. All are done in moderation.
Leftover bacon grease (very little needed since the scent is pretty strong)
Corn oil (helps with coat, too), sometimes my greyhound wouldn't touch his food if I didn't sprinkle some corn oil on first.
A small can of Veg-All
Plain yogurt
Plain cottage cheese
Low sodium chicken broth
Canned dog food
Sardines (awful breath afterwards)
Salmon oil
Leftover bacon grease (very little needed since the scent is pretty strong)
Corn oil (helps with coat, too), sometimes my greyhound wouldn't touch his food if I didn't sprinkle some corn oil on first.
A small can of Veg-All
Plain yogurt
Plain cottage cheese
Low sodium chicken broth
Canned dog food
Sardines (awful breath afterwards)
Salmon oil
