how do you say hotdog ( as in the food ) in spanish???
Hot dog = el perro caliente
You can also say "la salchicha" which is a more general term for sausage/processed meat links.
This is a description my professor from Catalonia, Spain gave to our class. Like many other things, I'm sure there are variations on the usage from place to place.
Here it is "hotdog" with the English pronunciation (more or less) and there are several hotdog vendors around. Salchicha is a sliced up sausage put a wooden skewer and cooked on a grill. They also sell pieces of beef or chicken on skewers at the same stands.