You can read more about the dog in this clip at the owner’s blog http://baddoglaszlo.blogspot.com/ . Laszlo, the doberman in the video, was a rescue dog that
“upon adoption [he] instantly manifested all the most disturbing rescue-dog behavior problems you could conceive: unhinged aggression towards dogs, unpredictable edginess with people, jumping up, pulling like a sled [...]