All dog owners should take precautions to ensure that their dog is not a threat to others. In almost all countries, you can be subject to criminal and civil liability for attacks of your animal. While some places require prior knowledge of the animal's viciousness before making you liable for these attacks, others make you automatically liable, whether you knew your animal to be vicious or not. The best remedy against dog attack is responsible training on the parts of dog owners. The most serious problem a dog can develop is to show aggression.
Obedience training is essential in preventing aggression in dogs.
If your dog shows signs of uncontrollable or sudden anger, consult with your vet or a dog trainer without delay. If your dog is aggressive towards you, try commanding the dog to lie down right away and then give it a stern verbal correction. If a dog was rarely handled as a puppy, the dog may not know that a tall stranger bending over and towards it with an open hand means to caress. Owners of such dogs should gradually introduce strangers to the dog and reward good behaviour. A stranger is less threatening if sitting down.