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How to train a greyhound
Buy a six foot nylon leash and a martingale collar.
A greyhound can back out of a standard buckle collar, so you will need to purchase a martingale collar for your new pup. You should never use a metal choke collar as this could damage your greyhound's throat.
You can find the leash and the martingale collar at your local pet store. A martingale collar is made up of two loops, a large loop that is adjustable and placed around your dog's neck, and a small loop, known as the control loop.