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How to walk two dogs
Take one dog for the loose leash walk at a time.
You want to train each dog to obey the leash pull signal first before getting them together.
Remember to carry necessary supplies with you as you would for any dog walk such as the leash, water, poop scoop, and disposal bag.
Typically, you should walk up front with your dog. This won't be as easy when walking two dogs at once, but will be better for the training phase.