Fla. Stat. § 588.19
If there be no bidder for such livestock at the sale aforesaid, and the sheriff has been unable to locate the owner through the notice procedures described in this chapter, the sheriff shall sell the livestock at the nearest livestock auction yard. The proceeds from the sale shall be used to reimburse the expenses incurred in capturing, maintaining, and selling the livestock and in attempting to locate the owner. Any money remaining after all expenses are paid shall be given to the owner of the livestock, if known. In the alternative, the sheriff may deliver the carcass to a public institution of the county, state, or municipality within said county or to any private charitable institution, in the order herein set forth, according to their needs.
Fla. Stat. § 588.19