Historical clue formulations

• Have a cow? — 2025-09-10
• What cows and icebergs do — 2022-12-23
• Give birth, as whales do — 2019-12-21
• Give birth on a farm, in a way — 2016-08-07
• Make a little lower? — 2013-12-14
• Give birth, as a whale — 2013-03-05
• Give birth, as a whale — 2012-02-08
• Have a cow — 2011-03-02
• Deliver at a farm — 2010-11-14
• Have a cow — 2004-12-26
• Have farm young — 2002-08-08
• Mare : foal :: cow : ___ — 1998-03-10
• Give birth, in a way — 1994-04-17