In a confrontation between a thief and a police rottweiler who do you think would come off worse? Most would think the thief, but not in this case.
A man was running from the scene of a burglary when police ordered him to stop. He didn't, so the police let a rottweiler loose after him. The dog bit him, he fell and broke his heelbone.
A few days later, they found out he was HIV and Hep C positive. There was a theoretical risk the dog had been infected. There was also a risk of the dog passing the infections to anyone it bit, leaving the police open to multimillion pound litigation. So the dog was euthanased.
So the rottweiler did come off worse.