# The Mutilations (Permitted Procedures) (Wales) Regulations 2007, Paragraph 5: Tail docking


In all cases, enough of the tail must be retained to cover the vulva of a female animal or the anus of a male animal.
When the method used is the application of a rubber ring or other device to constrict the flow of blood to the tail, the procedure may only be carried out on an animal aged not more than 7 days.
When any other method is used an anaesthetic must be administered.

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Source: https://www.legislation.gov.uk/wsi/2007/1029/schedule/5/paragraph/5 (the official version)
Page: https://openlegislation.uk/mutilations-permitted-procedures-wales-regulations-2007/schedule-5/paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.