Q: About three weeks ago, I rescued an adorable beagle. In the last few days, however, we've found he's food aggressive. He will take his own food/treat without a problem, but then go to one of my other eight dogs' bowls and growl, then bear teeth, and then bite if the dog won't give up his/her food. More disturbing is, he is now going after the other dogs' treats. He doesn't respond to "leave it!" When held by the collar and told to "leave it," he continues to go after the dog and snap at either myself or my husband.