Walkee

Accompanying her was Prinny, who was made very happy by this intimation that he was to be taken for a walk, an undertaking for which the servants generally drew lots, the dog’s mass being so considerable and energetic that the walker inevitably became the walkee.

Source: wiktionary

Consequently, he had developed a new variation on an old habit. That of grabbing the leash between his teeth and pulling as hard as he could, making it look as if he were the walker, and the walker the walkee.

Source: wiktionary

I remember that walking a dog is a good way to get both the walker and the walkee in shape.

Source: wiktionary