Shadow
The injured Border Collie dog in the book The Sorcerer in the North.
The name Shadow
Shadow · Unisex · English word name origin · "The dark shape or area made when an object blocks light"
See the full name profile for naming variations, similar names, and other famous bearers of Shadow.
Cross-referenced against the Wikipedia entry. Where text is paraphrased from Wikipedia, the original is licensed under CC-BY-SA 3.0; image licenses are noted per image above.