Historical clue formulations

• Ones without owners — 2022-10-30
• Cheats, euphemistically — 2016-11-24
• Humane Society pickups — 2016-06-07
• They may be measured by the pound — 2016-01-10
• Many pound dogs — 2014-12-17
• They get added to pounds — 2010-03-14
• Doesn't stick to the straight and narrow — 2008-02-20
• Errs — 2007-12-02
• Doesn't follow the party line — 2007-03-09
• Doesn't keep to the straight and narrow — 2006-03-08
• Alley mewers — 1997-12-28
• Pinfold residents — 1994-08-14