We have an 8 month old Border Collie mix who is a power chewer, loving but destroying stuffed animals, rope toys, etc. We bought her a chew toy (one of many) at a pet store and they promised it was tougher than a Kong. She ripped the ends off in less than 10 minutes.After searching the internet I ran across West Paw and saw the Hurley and ordered one. Well, 2 weeks later this is her favorite chew toy and there is not 1 mark on it. I'm not sure how you do it but it's wonderful. The toy is pliable which holds her interest for long periods of time.She loves to play fetch with it and other times she just peacefully chews. It's great for the dog and for us during this tough teething phase! We are customers for life.:)