I suggest you feed them separately until you can get this behavior under control. Does it only happen when feeding? Has there ever been any blood or damage, or just a lot of fuss? Some dogs do get food aggressive, and you can choose to manage it, or train it. Managing it might involve feeding them in separate rooms, or in crates or something. One of my little Italian greyhounds will growl and bark at my greyhound during feeding. I live in my RV, so it's not practical to completely separate them, but I stand ready with a squirt bottle, and if telling little Merlin to stop doesn't work, I spritz him with a little water. If I stand or sit between their bowls so they can't get within a few feet of each other, usually they're fine.
Good luck! And if blood is being drawn, or the aggression spreads to other areas beyond just food, I'd suggest you find a really good animal behaviorist (not just a trainer) to help you.
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