How sad to hear of what happened to Ziggy and I can only imagine your heartbreak right now. Even though it's too late for your sweet Ziggy, animal control should be contacted so they can get these stray dogs off the streets. Please don't blame yourself for Ziggy, there wasn't anything you could have done to prevent this. For a time Ziggy knew what it's like to be loved because of you. RIP, dear Ziggy.....