Actually, the Springer is designed so the dog can't run too far forward or backwards. The dog essentially has to stay right beside the bike. If a dog was particularly persistent, as a basenji is wont to be, it could somehow get between the two bike wheels, in that area underneath the seat, to the other side. That has never happened though. Once the wheels are spinning, Rou seems to instinctively understand that they are to be avoided.
Rou says thanks for the bones!
-pamela