The following shall be sufficient and be deemed a lawful fence only as to horses, cattle, and mules: any enclosure made by stretching not less than five (5) strands of barbed wire tightly between posts firmly set in the ground, or between growing trees and posts firmly set in the ground, not more than twenty feet (20') apart; the topmost wire not less than four and one-half feet (4½') from the ground, the bottom wire not less than six inches (6"), and the next to the bottom wire not less than fifteen inches (15") from the ground.
Structure 2021 Tennessee Code
Title 44 - Animals and Animal Husbandry
Chapter 8 - Fences and Confinement
§ 44-8-101. Land in Cultivation Sufficiently Fenced
§ 44-8-102. Various Materials Constituting Sufficient Fencing — Rules
§ 44-8-103. Horses, Cattle, and Mules Sufficiently Fenced
§ 44-8-104. Paling and Wire Fence Lawful
§ 44-8-105. Three-Wire, Plank, or Slat Fence a Lawful Fence
§ 44-8-107. Defense of Insufficiency of Fence
§ 44-8-109. Notoriously Mischievous Stock to Be Confined
§ 44-8-110. Liability of Owners of Notoriously Mischievous Stock
§ 44-8-112. Pulling and Leaving Down Fence, or Opening and Leaving Open Gate, a Misdemeanor