There is a reason why dogs behave differently from usual. To attack or threaten a stranger in my family's territory, to protect myself with fear, an instinctive impulse to hunt, and so forth.
If a pet's behavior suddenly changes, you should be suspicious of health problems. In particular, if you become aggressive, you should be diagnosed more quickly as you can injure your family members and other people outside of your family.
Body condition, like a human being, is a factor that determines the mood and personality of the day.
If a pet dog suddenly becomes aggressive, it can cause many diseases to survive. The first is brain disease. If you have a disease in your brain, it can change your personality, and if you have a tumor, you risk attacking people unconsciously.
Second, it hurts. There are occasions when you bite the affected area to protect it. Finally, dementia, poor vision or hearing. Nerves that don't recognize or are sensitive to their victims can also cause aggression. For these many reasons, it is necessary to observe and care about pet dogs to prevent this phenomenon. Keep in mind that if you don't deal with this situation quickly, it could hurt your neighbors, owners and even my family.