Sorry, but in order for anything you're saying to be the first bit relevant to any prosecution, they would have to prove that the dog owner was PRESENT, was CONSCIOUS, was AWARE of what was happening, and was CAPABLE of stopping the dog from finishing the job, to have any chance at all in pressing charges. The ONLY way they're going to be able to determine that, short of a stupid dog owner incriminating himself, is with an eyewitness. Digressions about forensics are irrelevant to the potential to prosecute without those conditions being met first. As I said, if there were eyewitnesses available then a prosecution would be possible, and even then, it would still require all the extra burdens of proof you're talking about above.
But, if that's somehow not the case, then UK law is deranged, and those pet owners in Wales have plenty of reason to fear for their beloved pets and their own freedom because some burglar breaks into their home.
Edited by Yamato, 30 January 2013 - 12:47 PM.