My dog loves the Hurley Bone. I have bought him all the Zogoflex toys and this one is his favorite. I think the black one seems tougher than the other colored bones. He is a chocalate lab/weimeraner and he destroys all of his toys fairly quickly but this one keeps him busy. We've had it for a few weeks now and it's still in one whole piece! Even my schipperke mix likes it and she's not a very toy oriented dog like my big lab/weimy.