Historical clue formulations

• Pointy-eared dog — 2021-10-03
• Dog whose tail curls over the back — 2017-04-23
• Pointy-eared dog — 2017-01-03
• 1972 Olympics sensation Mark — 2015-07-22
• Mark who was a swimming phenom at the 1972 Olympics — 2008-06-30
• 1972 Olympics sensation Mark — 2007-02-27
• Thick-coated dog — 1998-01-29