Let me share with you a short exchange of text messages.
"Me: Do you have any interesting facts about dog skeletons?"
"AQA: A dog tail has a bone. A dog's body consists of 319 bones. If a dog's tail is docked or absent at birth, there are fewer bones in the skeleton."
There you are. Dogs have bones, and if some are missing there will be less of them. This is one of the many interesting and useful facts you learn from my blog, yo.