Preheat oven to 350°F and line a baking sheet with parchment paper.

Cut each hot dog in half crosswise, then cut a cross shape into each end, leaving the center intact to form legs.

Wrap a piece of crescent roll dough around the center section of each hot dog piece.

Arrange on the prepared baking sheet and bake for 8 to 10 minutes, until the dough is golden.

While the spiders bake, squeeze ketchup into a dipping bowl and swirl mustard on top to create a web pattern.

Remove spiders from the oven and press two candy eyes onto each crescent roll body, using ketchup as glue.

Serve warm with the ketchup web dipping sauce.