Historical clue formulations

• Howled like a wolf — 2020-05-31
• Sang in the moonlight, maybe — 2013-10-06
• Imitated a wolf — 2012-02-22
• Emulated a wolf — 2011-02-09
• Howled — 2008-03-29
• Emulated a coyote — 2006-05-19
• Howled — 2002-02-28
• Howled — 2000-01-07
• Howled like a hound — 1997-04-21
• Sang to the moon — 1994-07-04
• Howled — 1994-05-06