Reaper that's funny but right.
Think reward/reinforce good behavior, bad behavior not fun or pleasant. For some good dogs just a word or sound in the right tone gets the message across pretty quick. After the paper thing only allow the dog near yourself and family - don't let anyone else become friendly with it.
A good professional trainer can show you how to teach your dog a command which allows him to eat. Caveat is the dog...some aren't as trainable as others. The guy (here in AZ) whom trained the Doberman Gang/AF Dogs trained me how to control/train two border terriers, not an easy endeavor.
I'm a Schnauzer fan but have had a well trained doberman from germany that was great too - too bad my german sucks
