I have an American Pit Bull Terrier and a Lab and Chow mix which i have brought a lot of toys in the 5 years i have had them. They destroy everything in two seconds. When i got this in the mail i gave it to them and i have never seen them play with a toy like this before. They acted like puppies. This is one of the best dog toys i have ever purchased. Kudo's to whomever invented this.