One to four dogs can be hitched to the scooter. The scooter is also a better vehicle than a bike. The dogs can pull you over when hitched to a bike. They can't pull a scooter over. Your feet are right next to the ground.
Several dogs pulling a scooter are safe, unlike several dogs running alongside a bike.
When Rubro and I go scootering he is in front of the scooter hitched to the scooter by a slender line. He is trotting along at a good clip on crowded urban sidewalks. We work with voice commands only. No reins, no shafts, no leash. To people used to riding horses this is amazing.