Preheat oven to 375 degrees and line a baking sheet with parchment paper.
Roll out the crescent dough sheet. Use a rolling pin to slightly stretch it out.
Cut the crescent dough into thin strips with a pizza cutter.
Pat the sausage links dry and begin to wrap each link with strips of dough to make it look like bandages. Leave a little space at the top for the eyes.
Place the wrapped sausages onto the prepared baking sheet and bake for 15-17 minutes, or until golden brown and sausages are warmed through.
While the sausages are cooking, use a straw to cut enough circles out of the cheese slice for eyes.
With a smaller pastry tip, cut circles out of black olives for the pupils.
Gently press the olives into the center of the cheese circles.
When the sausages are done cooking, allow them to cool slightly before adding the eyes.
Serve the sausage mummy dogs with a side of marinara sauce for dipping.