Related Clues:

• Comet part
• Monkey's prehensile body part
• Suspect follower
• Follow secretly
• Donkey pin-on
• Cat feature
• Mouse appendage
• Whippet wagger
• Dick, at times
• Deer's scut, e.g.
• Head alternative
• Switched appendage
• Pin the ___ on the donkey
• Keep tabs on, perhaps
• Mr. Ed's fly swatter