Our year old neutered male bassett hound recently began showing very aggressive behavior toward family members and other dogs in our home. This behavior just began in the last month. He is especially bad at feeding time or anytime there is food involved. He hasn't bitten anyone but he growls and threatens. Is this a common thing in male bassetts or is he genetically defective. We are working through this problem applying firm discipline (using techniques from the Dog Whisperer). The techniques are working, we are committed to fixing this problem, we love our dog and want him to be a good citizen. We were just curious if this is a common problem.