I am a little groggy because I just recently just returned from Long Island, NY. I had to go to a special veterinary dentist and have surgery. My mom and grandpa drove me there. The surgery was to fix a slab fracture in my tooth. It hurt a lot, but the surgery wasn't too bad. I got a root canal and they had to give me some pain killers. Dr. Carmichael ( he's really nice) said that I probably broke it on a hard bone or Nylabone, and that it happens to a lot of other doggies. So, even though I like them my mom no longer gives them to me- only Greenies. Tell your mom and dad to not give you hard bones or you might wind up having a lot of pain like me!!