Symptoms of a severely frightened dog:

1. Barking loudly. He will become more timid, run around when stimulated, and bark loudly, unable to calm himself down.

2. Aggressive behavior. Some dogs can develop aggressive behavior, even dogs that are usually docile.

3. Glandular fluid leakage. Some dogs will have anal gland fluid leaking, which is a sign of extreme fear.

4. Become introverted. Your ability to adapt to the outside world may be reduced, and you may become introverted, preferring to stay in places where you feel safer.

5. Physical discomfort. Physical reactions that dogs may experience include loss of appetite, not eating or drinking, vomiting, diarrhea, etc.

How to care for a frightened dog:

1. Get more company. Accompanying the dog, playing with the dog, and always appearing in the dog's sight will make the dog feel at ease.

2. Be patient and comfort. You should pet your dog patiently and talk to it in a gentle tone to make it feel that you care.

3. Create a quiet environment. Create a comfortable and safe space without external interference, so that the dog's nervousness can slowly relax first.

4. Feed delicious food. In the presence of delicious food, dogs will slowly relax their vigilance and eat when comforted.

5. Play with toys. Find toys that your dog likes, such as balls, Frisbees, or small dolls, and play with them by your side. Your dog will quickly forget those fears.