<p>The invention concerns a leash charging system (100) and method (300) for charging. The system can include a collar (110) that includes a rechargeable power supply (130) and an interface (132) and a leash (112) that also includes a rechargeable power supply (144) and an interface (146, 148) that detachably engages the interface of the collar. When the leash engages the collar, the rechargeable power supply of the leash can charge the rechargeable power supply of the collar.</p>
