The tail of a dog has many functions, such as maintaining balance, expressing emotions, protecting the anus, spreading scent, etc. The tail of a dog is also an extension of the spine, so it is necessary to protect the tail of the dog to avoid injury. Some people choose to do tail docking surgery on their dogs when they are young, so as to avoid tail injury. The specific decision of whether to dock the tail depends on the individual situation, and do not do it blindly.