Strengthen the bond between you and your dog with the PetSafe Core Dog Trainer, a safe training tool that works like a light tap on the shoulder to get your dog's attention. PetSafe patented technology communicates behavior corrections using a harmless and effective static collar. With a 25-year legacy in pet innovation, PetSafe remote static collars are trusted by veterinarians and trainers to help pet parents turn their good dog into a great dog.