bob tailed dogs

Have you ever noticed how a dog will lay on it's tail in cold weather. That is because it helps to keep them warm because the blood is close to the skin and there is alot of blood traveling through the tail. The tail also helps to cool them. It's kind of like pouring cold water on the back of your neck or on your wrist to help cool down when you are really hot. The tail also helps with balance but I don't think it affects their balance if they grow up without a tail. I don't mind a bob tail dog but if their born with a tail then I leave it.