I have 2 dogs that are zealots at chewing. The Hurly my one dog prefers just got replaced after over 4 years of chomping. Frank is an Queensland. The Hurly is a safe, simple solution for shoes, furniture and tennis balls. I highly recommend it. My other dog loves the Zisk. She will sometimes chase it, but for the most part, she chews it and grabs it firmly and swings it side to side so hard, you don't want to get in the way. The Zisk is also very durable.