Related Clues:
- First animal?
- Facial feature, for some
- Treacherous spy
- Underground tunneler
- Suburban tunneler
- Skin mark
- Burrowing creature
- Burrowing animal
- Slapstick trio member
- 20-Across, 38-Across or 55-Across
- Unwelcome C.I.A. discovery
- Marilyn Monroe mark
- Beauty spot
- Source of a leak, perhaps
- Insectivorous mammal