all of our legal contracts and documents are drafted and regularly updated by licensed attorneys. all of our legal contracts and documents are drafted and regularly updated by licensed attorneys. all of our legal contracts and documents are drafted and regularly updated by licensed attorneys. a horse bill of sale, or equine bill of sale, documents the sale or transfer of a horse between a seller and a buyer. a horse bill of sale is a legal document that memorializes the sale of a horse between two parties — a seller and a buyer. in exchange for a certain amount of money, the seller agrees to transfer ownership of a horse to the buyer.