Did you know? According to James F. Zachary and M. Donald McGavin, authors of the book "Pathologic Basis of Veterinary Disease" the petrous portion of the temporal bone is the "the strongest bone of the body." This is a flat piece of bone found at the sides of the dog's skull and known to be one of the densest bones of the body.
Indeed, the term "petrous" comes from the Latin word petrosus meaning "stone-like, hard." https://en.wikipedia.org/wiki/Petrous_part_of_the_temporal_bone#/media/File:Gray137.png