Springer Bike Dog Leash
This leash for bike riding enables you to have a safer time while biking with your dog. The Springer bike leash mounts low on your bike and has a shock absorbing coil. Both of these help in keeping your balance if you dog should tug on the leash unexpectidly.
The bike leash is also designed in such a way so that it helps keep your dog and and the leash a safe distance away from your bicycle pedals, chain and spokes to avoid an accident and injury to you or your pet.
Mounting the Spingler bike leash is a little involved. It is not easily transferrable betwen bikes, requires some bolts, glue and has 19 steps to the assembly, but once installed is probably one of the better and safer devices for riding your bike with your dog.
Source [Springer]