Control Your Dogs Aggressivity

You have to realize that almost all dog breeds have a inclination to get aggressive. But before trying to contain this aggressive conduct in dogs, you need to find out the right cause for the aggressive dog behavior.
Almost all dog trainers like to denote this dog-man relationship as a pack bond, a bond that consists of an ALPHA male and the rest of the pack. That's how a dog interacts with the people close to him. He considers he is the alpha male and he will be protective and in the same time aggressive.
And as most packs, he has a territory in his possession. In here, the favorite spaces or tokens, the favorite toys, etc can be a cause of aggressiveness. So, threatening his surroundings can cause your dog to display aggressive conducts and even biting, because he looses control over all his indispensable resources.
One of the best answer to this kind of behavior is a early and specific collar training. It should be done beginning in the puppy level, but if he is a grown dog you can use remote dog training collars. These will control his aggressive conduct. But you should first verify to see if he indeed has a true aggressive attitude. Most dogs that shake their tales when they see their owner are friendly in nature. The ones that are in an aggressive phase will try to show control with serious facial expressions, showing his teeth, not to mention a stiff physical stance and fixed focus and eye contact with the "dominated". The worst scenario is when he starts growling and snapping at their owners or even leaping at them, trying to bite.
Barking isn't viewed as a violent symptom. It's something natural for a dog to bark. It's a way to verbalize his pleasure of seeing you, or warn you of something wrong. In a paper there was a case of an old lady who got saved by her dog. He started barking intensively because he smelled the gases fuming around. The old lady was asleep and the gases could have killed her if it weren't for the dog. She promptly exited the house to get fresh air, as she felt headaches.
You can't ever train your dog to completely stop barking. You can control his aggressive conduct by stating the obvious, with workouts and proper commands: I am the alpha pack leader. The dog will sense that and will act accordingly and be open to your commands.