My 11-month old pit mix's teeth sliced through this toy like butter. If you have a power chewer, stick with the Extreme Kong or Nylabone products. I recently got the Nylabone Ring-Giant and he loves, loves, loves it...to chew and run around with. Just found out about a blue Kong that is supposed to be 25% stronger than ones bought in the store and ordered it...it came in and we'll be testing it out today.