- - Canine identifier
- - Canine caper clue?
- - "Blue's Clues" clue
- - Track around a park, maybe
- - A single one on a snowy doorstep might represent a cat going '. . . nope'
- - Rin Tin Tin autograph, e.g
- - Penn State symbol
- - Clemson Tigers logo
- - Trail mark.
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