Baby Hot Dogs

Hot dogs definitely have their place in the history of food. If you go to any sort of concession stand at an event, it is one of the first foods that you expect to be on the menu. There have been hot dog companies that have had commercial ads with parents taking their kids to sporting events and bonding over a hot dog while sitting in the stands. But never until I've come to Massachusetts, have I seen something known as a 'Baby Hot Dog' being served as a main dish at a restaurant. So Massachusetts, what's the deal with these baby hot dogs?