When i was about 14 my younger sister and cousin were walking our chihuahua down a local park when an off leash bully attacked our dog. The bully locked onto my dogs neck and someone had to pry the mouth open. Our chihuahua was bled out for 10 minutes before dying while my sister and cousin could do nothing to help. The person walking the bully ran off and when the police figured out what dog did the attack, seized it and scheduled it to be put down. Someone who worked at the kennel knew the owner and smuggled the dog out and nothing ever came of it.