The Cynosphere

"An unusual tricycle built in France in 1875, the Cynosphere was driven by two caged dogs. The Society for the Protection of Animals thought the idea inappropriate and further development was abandoned, just as the world's first superbike, driven by great danes, came off the drawing board. A ladies version driven by poodles actually went into production but suffered from several flat spots in the power curve. What's this got to do with motorcycles, well it is clearly where the term "a dog to start," so much used by Velocette owners, derived from!"

Link-Source - A-Z Motorcycles