#4- Shyness & Aggression
If your dog becomes antisocial, avoids petting and had stopped running to the door full of enthusiasm when people come then you should be worried. He may cry when you want to play with him or doesn’t want you to pick him up anymore. These symptoms might be a result of pain. If you notice that your little one becomes aggressive when people are round and he is hiding away then you should absolutely visit your veterinarian. Your dog may find a lot of different ways to express his pain, even with aggression.
