Black medium to large size dog (mixed breed) with spotted white front paws. Some white on his chest.Has short hair, multicolored eyes, and the eyes are distinctive. Is a mix of whippet and Australian shepherd and (?). Has a blue cloth collar. Name is Boots. Some how escaped 12/17 in the A.M. in the Congress Park neighborhood. Boots is 8/9 years old and can run fast. Will come to strangers. Tail is thin and has a bend near the tip. Call or text 303-907-4242. I do not have a photo.