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Review title: These are low cost and durable...
Product review: ...but they ARE harder than dog's teeth. It is the only toy my dog has that is harder than a Nylabone, and today the vet discovered she has a lateral crack through her largest molar when he cleaned her teeth. It is now in the trash, and she will never get anything harder than a Nylabone or Kong again as long as she lives, no matter how much more they cost or how quickly she destroys them... :-(
