RUFF BOYZ collar de corteza para perros grandes, perros pequeños y medianos – Collar de corteza recargable con advertencia de sonido y control de vibración, Blanco100% HUMANE BARK COLLAR: Unlike others, our dog collar bark control & humane bark collar will not cause your dog pain or distress. This Bark collar is suitable for all dogs! 7 LEVELS OF SENSITIVITY: This bark collar & anti barking device comes with sensitivity levels that activate when your dog barks. These adjustable vibrating collars are the best tools to educate your dog. NO MORE FALSE TRIGGERING: This anti bark collar & barking collar comes with