Hot dog historian and professor emeritus at Roosevelt University Bruce Kraig believes the term "hot dog" was invented in the late 19th century by American observers of German immigrants, who ate sausages on buns. The Americans joked that the sausages looked suspiciously like the Germans' dachshunds.[3]
The Bavarian concessionaire, Anton Feuchtwange, loaned gloves for his customers to hold his sausages at the 1904 Louisiana Purchase Exposition. When many were not returned, he asked his brother, who was a baker, to invent a solution. Thus, the hot dog bun was born.[4]