It's easier to deal with your pet's angry behavior if you know what's causing it.
There are a number of reasons why a dog exhibits aggressive behavior.
1. Wrong upbringing
Some dogs grow up aggressive from puppyhood if their owner regularly beats them. Others, who were not trained at all, believe that they can bark, attack passers-by or bare their teeth at their owner with impunity.
2. Pain
Since our pets, no matter how much we would like it, cannot talk, they convey their emotions and feelings in other ways. For example, a dog that is in pain can whine quietly, or it can become aggressive.
3. Fear and uncertainty
Fear for a pet is a reason to be on guard, to protect itself and not to let anyone near it. Timidity can be either an innate character trait or can manifest itself in the accompaniment of aggression when the dog finds itself in new conditions for it – for example, it gets lost.
In addition, pets sometimes behave aggressively when they are protecting their offspring or experiencing other instincts, such as hunting.
Finally, the dog may have problems with the nervous system, so the animal should be shown to the veterinarian.