Virginia Code Title 55.1. Property and Conveyances § 55.1-2820. When unlawful for animals to run at large

It is unlawful for the owner or manager of any domesticated livestock to permit any such animal, as to which the boundaries of lots or tracts of land have been or may be constituted a lawful fence, to run at large beyond the limits of his own lands within the county, magisterial district, or portion of such county in which such boundaries have been constituted and are a lawful fence.