Historical clue formulations

• Rikki-Tikki-Tavi, for one — 2025-06-27
• African mammal that's resistant to snake venom — 2023-01-23
• Cobra fighter — 2017-05-04
• Cobra's foe — 2013-07-28
• Kipling's Rikki-Tikki-Tavi, for one — 2010-05-03
• Ferretlike carnivore — 2006-03-25
• Ferret look-alike — 1998-10-02