Ahh the difficult teen years. Our springer was great off the bat - learned so quickly and was incredibly obediant. Then 5/6 months hit and he was such an arsehole and wouldn't do anything you asked of him! Got over it though😂
It’s called Docked not cut and only some vets will do it but only to working dogs. An undocked working dog will shred its tail when working through bushes and thorns etc. Also it’s done when the dog is much younger than this one.