Assistant dog trainers help run coaching classes for pet owners and their dogs or help prepare service animals for their duties. As an assistant dog training, your responsibilities may include ensuring leashes are adequately secured and that all equipment and supplies, such as treats, obstacles, or training equipment, are accessible during the class. You learn to train dogs by observing the head dog trainer; once you have worked in the field for a while, the head dog trainer may allow you to perform some of the training techniques on dog clients. Other job duties may include administrative tasks, such as confirming client appointments, scheduling canine behavior classes, and cleaning up after the lessons.