Another very stubborn dog breed is the Afghan Hound, as they were bred for hunting and looking after homes. They need very strict training and a strong leader. If they are not trained properly, they can become extremely disobedient. That being said, the main problem with Afghan Hounds is that they are very big dogs. Children are very easily knocked over by big dogs. Furthermore, they can sometimes misinterpret the playful nature of children as a sign of aggression, and behave in an aggressive way in return.