That's deeply distressing. First of all, I join him of course in congratulating the local authorities involved. Where animals have been injured with weapons, people should have no compunction in reporting the matter to the police. I know that after the event has occurred it's far more difficult to track down the culprits, but where there is a pattern of behaviour in a particular area, at some point in time those people will make a mistake and quite often they get caught. It's deeply distressing, of course, for those who own pets and I would encourage them, even if they think that nothing will happen, I'd encourage them to register the issue with the police and report it as a crime.