N.Y.C. Admin. Code § 17-329: § 17-329 Disposition of licensed horse.

The department shall be notified of the transfer of ownership or other disposition of a licensed horse within ten days thereafter. Such notice shall include the date of disposition and if sold in New York city, the name and address of the buyer or other transferee and such other information as the commissioner may prescribe. A horse shall not be sold or disposed of except in a humane manner.