In my adventures in sewing I have gone down the path of dog collars. My own three huskies use martingale style collars that have a limited tightening feature when the dog pulls. In the case of my boys, they can back out and slip a classic collar in a matter of seconds. They are just so fluffy a standard collar does not work for them. I use a martingale and a harness for safety reasons.
Here are some examples of my collars.