Transfer of title to personal property is normally made by a bill of sale. A bill of sale also constitutes a record of what has been sold, to whom, when, and for what price. A sale of animals ordinarily involves the same considerations as the sale of any other personal property. Therefore, such sales are generally governed by the provisions of the Uniform Commercial Code, which, in UCC § 2-105(1), specifically includes the unborn young of animals in the definition of "goods."