LAWFUL FENCE
lawful fence.A strong, substantial, and well-suited barrier that is sufficient to prevent animals from escaping property and to protect the property from trespassers. — Also termed legal fence; good and lawful fence. Cf. SPITE FENCE . [Cases: Animals 92; Fences 1, 19. C.J.S. Animals §§ 243–246, 248.]
[Blacks Law 8th]