Generally speaking, no, you should not run away from a dog, even if it appears dangerous. This is the first instinct that many people have, simply seeking to protect themselves, but it often makes things worse.
For one thing, turning to run means that you have to turn your back on the dog. On top of that, many dogs have a strong prey drive and like to chase, so running just makes them more likely to do so. They begin to view you as prey that is escaping, and they will follow.
Furthermore, remember that dogs are almost always faster than people. Even if you run, if you cannot escape the dog, you have not actually made your situation any safer.
What should you do instead?
It is wise to avoid direct eye contact with the dog, which can be seen as aggressive. But instead of turning your back, just try to turn sideways and watch the dog with your peripheral vision.
Dogs are often territorial, so slowly backing away from the dog can be helpful. This demonstrates that you are not a threat and removes you from its perceived territory.
Your best option is often to try to remain calm and collected, lowering the energy in the encounter. Screaming, yelling and flailing your arms just increases the energy. But if you stay still, tuck your arms in close to your body and slowly try to move away from the dog, you may be able to avoid an attack.
What if you are still bitten?
Unfortunately, some dangerous dogs will still bite, even if you do everything correctly. If you suffer serious injuries, you need to know how to seek financial compensation from the dog’s owner.