Dog Bike

If dogs pulling a sled make it a dog sled, I guess dogs pulling a bike make it a dog bike? These two dogs were well heeled and disciplined, as you might expect sled, or bike, dogs to be. But, the following day I saw the team again with an addition - a smaller dog on an extenda-leash stretched out clear across the path. I hate those things - extenda-leashes I mean, not dogs; one of the banes of my cycling existence.