Section 53-251 - Docking of horses' tails(a) Any person who cuts the bone of the tail of any horse for the purpose of docking the tail or who cuts the muscles or tendons of the tail of a horse, or otherwise operates upon it in any manner for the purpose or with the effect of altering the natural carriage of the tail, or who causes or knowingly permits such cutting or operation to be done upon premises of which he is the owner, lessee, proprietor or user, or assists in or is present at such cutting or operation, shall be fined not more than three hundred dollars or imprisoned not more than one year or both. Any horse with a tail set or apparently with a tail set shall be accessible and subject to inspection by any officer or agent of the Connecticut Humane Society.(b) If a horse is found with the bone, muscles or tendons of its tail so cut and with the wound resulting from such cutting unhealed upon the premises of any person, such facts shall be prima facie evidence that the person who occupies or has the use of the premises on which such horse is so found has committed the offense described in subsection (a). If a horse is found with the bone, muscles or tendons of its tail so cut and with the wound resulting from such cutting unhealed in the charge or custody of any person, such facts shall be prima facie evidence that the person having the charge or custody of such horse has committed the offense charged in said subsection (a).(c) No provision of this section shall be construed to prevent the operation by a registered veterinarian upon the tail of a horse when such operation is necessary for the health of the horse or is the means of effecting the natural carriage of its tail.Conn. Gen. Stat. § 53-251