A wireless fencing system comprises a tetherless leash, a programming fixture, and, optionally, a terminal. The tetherless leash, which is attached to an animal that is to be monitored, establishes a “virtual” (i.e., barrier-free) perimeter based on geo-coordinates. The tetherless leash also monitors the position and movement of an animal relative to the perimeter, and delivers warnings, corrections, and praise to the animal in accordance with its programming. The programming fixture serves as a user interface during programming operations, since there are no exposed buttons by which a user can directly program the tetherless leash.
