Hi! I practise with my husky and the rott of my boyfriend bikejoring, and I did a tricycle to myself with 2 old bicycles (I might spend the planes to you but I did them in Spanish).
This weekend I went to a few days of initiation to the mushing and there it was Kay's baptism in the mushing (even I wait for the photos of the small race of 5 kilometres that we did)
For a dog I advise you a bicycle or monoskate,
For 2 dogs and to compete, it is necessary to remove the chain to the bicycle, or you can begin with the tricycle (I am alternating)
But for 3 dogs I advise you a tricycle that is mas stablly for the force of them.