Historical clue formulations

• Warm-blooded sort — 2023-07-12
• Bat, rat or cat, but not a gnat — 2023-05-29
• 45-Across, for one — 2022-12-30
• The hare, but not the tortoise — 2021-10-02
• Moose or mouse — 2015-03-22
• Fox or ox — 2012-05-09
• A man or a mouse — 2011-08-28
• Platypus, e.g. — 2009-06-28
• Warm-blooded animal — 2007-07-09
• Mustang or impala, e.g. — 2006-08-24
• Bull or bear, e.g. — 2004-09-24
• Bear or hare, e.g. — 2002-01-21