Normally in the UK stopping a crime would be grounds for arrest. lol.
Aww I love heroic dog stories like this. I was visiting distant relatives one Christmas and chasing 2 little neices around the kitchen island when all of a sudden I felt a jaw clenched on my arm. I stood still and about 3 seconds later the Rottweiler let go. Just gave me a warning to not hurt the kids lol. Good dogs for protection.