A dog training collar can help you teach your dog obedience and basic commands. No need to scream at the dog or punish it. You just pull on the training collar and the dog will stop being naughty instantly. Each paw naturally spreads pressure to mimic a bitch with her pups.--This fork collar is a safe and humane way to stop your dog from barking. It is effective and safe, has no side effects, and will not electrocute or harm your pet. This dog collar is smooth and rounded to ensure it won't hurt your pet, and provides a gentle pinch to train them, similar to how a bitch would straighten a puppy's teeth, while also ensuring your pet's pull is noticeable when walking reduce.Suitable for: small dog=2.5mm*35cmMedium dog=3.0mm*50cmLarge dog=3.5mm*55cmx large dog=4.0mm*60cmGuaranteed Purchase To help you achieve optimal control, we've added a protective cover and carabiner for you to achieve the best results. The team focuses on pet supplies, our mission is to make every pet owner enjoy every second with their pets