Catch 22

Many attorneys are familiar with the case of Pierson v. Post. It is often the first case studied in law school when property rights are taught.
The trouble started in 1802 at an uninhabited beach near Southampton, New York. Lodowick Post, a local resident, was out with a hunting party when his hunting dogs caught the scent of a fox and began pursuing it. As they drew near the fox, Jesse Pierson, another local resident, saw the fox—though he denied seeing Post and his party—and promptly killed it and carried it off for himself. Post filed a lawsuit against Pierson, claiming that because he had already begun pursuing the fox, the property of the fox’s pelt and carcass were rightfully his and not Pierson’s. The local justice ruled in favor of Post. Pierson appealed the ruling to the New York Supreme Court of Judicature, which reversed the justice’s decision and ruled in favor of Pierson.
The dispute required determining at what point a wild animal becomes “property.” The judges chose not to follow common law precedent on wild animal capture, and so were forced to synthesize reasoning from a variety of well-known historical legal treatises. They concluded that Post did not acquire the fox just because he was chasing after it. Therefore, Pierson was entitled to keep the fox. However, they added, if Post had mortally wounded the fox or actually ensnared it thereby depriving the animal of its liberty, then Post would indeed be the rightful owner.