I had a dream in which a slug was on the floor and a sparrow flew up to it and they actually started fighting. I didn’t know that the slug could fight back so hard but I was seeing the sparrow’s feathers flying. Eventually the slug had had enough and started to retreat but was still being attacked by the sparrow. It finally escaped through a gap in my screen door and the sparrow stood there preening it’s feathers. I didn’t know what kind of bird that it was until I looked it up after waking.