Your neighbor’s dog might’ve bitten a stranger when provoked, so it may not be so surprising that these animals are more dangerous than you thought. The thing that makes dogs so dangerous, though, is their transmission of rabies. If a dog isn’t vaccinated and is bitten by a rabid, it will get rabies. If they bite a human, they’ll transfer rabies to the human, which is incredibly fatal. Symptoms include confusion, fever, body aches, delerium, and eventually, death. Not only that, but if an angry aggressive dog attacks a human, the bite can lead to serious injury. If it attacks a child, they could potentially kill it (via Science Focus).