As a former vet tech, rescuer and pup momma I've come across some chewers that take the cake. Of course, one of my own is the worse of the worst. My monster lab/poodle mix can DESTROY just about anything I buy for him . He snaps the ultra kongs in half without blinking and will crack even the largest Nylabones within a few minutes. Even toys marketed as indestructible with money back warranties fall to their death in his jaws. That said .... HE LOVES THIS BONE and hasn't managed to do much damage to it which makes it one of the best chew toys I've ever encountered.