I have two Boston Terriers that destroy any toy that we get them within 15 minutes..and we have purchased many...now this product is a miracle because it is very hard and you would think they would not like it but they fight over it so much we purchased another one.  Our Bostons are very hardy chewers and this toy holds up against their teeth attack .  A perfect chew toy for anyone that wants their dogs to be happy and content with a chew toy that will last.