I am looking at a Staffy which is aggressive towards other dogs. In training the dog will lunge at any dog which comes close and is lightening fast. Although this means the dog will hit the end the end of the lead, do an airborne flip, rebound flight through the air and then hit the ground SPLAT, this doesn't seem to deter him. I think he's always wanted to fly.
It is not possessive behaviour re the owner. The dog is after killing other dogs and is just as aggressive towards his housemate who has learned to defer to him. A small dog which recently wandered into his yard was killed. Whether by him or both dogs is unknown.
In training the owner can control the dog by keeping it on a short lead but I'm not seeing any method bringing immediate improvement other than electric shock treatment.
