I have a very hyper Pug. He LOVES to pull. I placed this around his neck and he's just walking beside me now.I took one link off and it fits loosely around his neck until I tug on it.It's really hard to put back on him since you have to hook it back into place, and that's really hard with a hyperactive dog.Another thing I don't like about it is that the rubber pieces fall off and him and my other dog started chewing on it. I don't wanna take all of the pieces out because I know it's going to hurt a lot more.Either way, its cheap and it gets the job done. I'd buy a second one if this one broke.And to the people who's saying it fell part, you're probably using it wrong because it works just fine. And my Pug is WHITE. He jumped into the water with this thing on and there was no discoloration on his fur.