Historical clue formulations

• Wild pigs — 2025-04-15
• Animals with tusks — 2023-10-08
• Wild pigs — 2023-10-03
• Swine — 2018-03-06
• Male hedgehogs — 2016-11-24
• Swine — 2014-03-13
• Tusked animals — 2011-08-04
• Sows' mates — 2009-09-01
• Sources of some leather — 2009-08-15
• Animals used as food on "Lost" — 2006-11-12
• Wild swine — 2005-01-17
• Pen pas? — 2002-06-02
• Sty dwellers — 2001-05-22
• Big game — 1998-02-21
• Swine — 1997-03-06
• Male guinea pigs — 1996-01-12
• Tusked animals — 1994-12-24