This is truly a heart-breaking story, but one I felt I needed to share. I have two "tips" regarding collars and tags. I've used Boomerang tags with much success. They fit flat onto the collar and have two benefits. First, they do not jangle; peace reigns in the house. Secondly, they are made of stainless steel so they don't rust or lose the lettering. I take all the dogs' tags--rabies, license, ID tag, etc.--and put them on the ring of their leash. That way when we are out and about on a walk, they have their credentials.
Please take this story to heart and take any dangling tags off your dog's collar, or remove the collar when you crate your dog. Let's keep our dogs safe.