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How to train a bully breed dog
Get the right collar and leash.
The collar and leash you choose for your dog is often a matter of aesthetics, but with bully breeds you'll need to keep practical considerations in mind. Remember that because bully breed dogs tend to be stout and muscular, collars and leashes made of strong, unbreakable materials are the best way to control your pet.
Try a head collar like those made by gentle leader. These redistribute pressure so that your dog is not injured by pulling on the leash.