Thats exactly what they are doing when they growl and try to bite.
The only way I know to fix this is by ( if you walk the dog on a leash) make them walk a little bit behind you, this put you as the alpha. Always make sure you go in the door first and out of the door first. You must make them wait.
And I know this one would be hard but make sure you eat before they do. In a dog pack the alpha dog eats before anyone else. Although we love to think of them as little humans they are still dogs and still follow pack rules. I hope this helps.
