A hotdog by definition always contains a boiled sausage stuffed inside a bun or something similar. A currywurst isn’t a hotdog. It comes with fries and no bun Also that Germany variant in the pic isn’t one. It’s just the plain old delicious Bratwurst and Sauerkraut.

The standard hotdog you can find in Germany consists of a bun and sausage with ketchup, mustard, crispy onions, pickles and sometimes cole slaw.