Historical clue formulations

• Lead dogs — 2024-02-08
• Pack leaders — 2023-04-08
• Top dogs — 2020-10-18
• Socially assertive types — 2018-07-30
• Top dogs — 2017-08-28
• Leaders of the pack — 2015-03-26
• Intimidating sorts — 2014-12-03
• Top dogs — 2014-11-18
• Socially dominant sorts — 2014-03-22
• Pack leaders — 2011-03-13
• Series beginners — 2009-01-06
• Dominant dogs — 2008-12-29
• Dominant dogs — 2006-12-24
• Top dogs — 2001-04-11
• AAA — 1999-12-12