Dogs are not naturally inclined to attack humans unless they feel threatened by themselves, their herd or their territory. However, certain situations, including irresponsible owners, can lead to an attack by aggressive dogs.
If you are dealing with an aggressive dog, the most important thing to remember is this: Stay calm. Do not give up out of fear or anxiety and do not start yelling, running or kicking the dog. If you stay calm, increase the chances that the dog will calm down and leave.
Also avoid direct eye contact with an aggressive dog. Stand a little sideways watching the dog with the tail of the eye. If you have fallen, gather and stay that way.
Once you notice that he has calmed down somewhat, try to create your own space. If you have something on hand, like a stick or umbrella, put it in front of you to look bigger than the dog. This shows the dog your space. When the dog realizes that you are not threatening him - and you are not being threatened by him - he will probably lose interest and the situation will calm down.
Unfortunately, this process is not always possible. Some people, like runners, are attacked before they have a chance to dodge the attack.
In such cases, if you have something with you that can serve as a first line of defense, such as a sweater, bag, stick, etc., remove and use. Anything that can serve as a distraction, like shoes, use.
In all cases, remember to protect your face, chest and throat. Hold the folded hands clenched to protect the fingers.
If it bites you, resist the natural instinct trying to pull it off. This will only make the damage worse.
If the attack escalates, remember that the dog has only one mouth, but you have two hands. Try to manage the situation and grab the dog’s hind legs and lift them off the ground.
Sources: WHO, Cesar's Way