I don't know why they do tail docking. I always wondered the same thing. Mandy's Breeder told us they were stopping tail docking on Rottie's in Germany, as of the first on the year. He has three one year olds with tails, they are so cute. I love our Chihuahua's tail, I couldn't picture him without it. What a good question, why do they dock them, I'm sure it's got to be painful.