| 2026-08-25 | Creature sometimes trained for bomb detection |
| 2026-08-21 | Snitch |
| 2026-08-16 | Squeaker … or squealer |
| 2026-07-01 | Chinese zodiac creature |
| 2026-07-01 | Double-crosser |
| 2026-05-13 | Tattletale |
| 2025-12-27 | Bad singer? |
| 2025-10-19 | Word with pack or rug |
| 2025-10-01 | Splinter in "Teenage Mutant Ninja Turtles," e.g. |
| 2025-09-25 | Snitch |
| 2025-09-24 | Squealer |
| 2025-09-15 | Tattletale |
| 2025-06-09 | Scampering rodent |
| 2025-05-28 | Backstabber |
| 2025-04-02 | Lab course participant? |
| 2025-03-08 | Animal fittingly used as a motif in "The Departed" |
| 2025-02-27 | Pest that can be a pet |
| 2025-02-26 | Pixar's Remy, for one |
| 2025-02-11 | Backstabber |
| 2025-02-03 | Mouse's bigger cousin |
| 2025-02-01 | First sign in the Chinese zodiac |
| 2024-12-28 | Singer in the family? |
| 2024-09-30 | Tattle (on) |
| 2024-08-18 | Sewer scurrier |
| 2024-08-13 | Traitor |
| 2024-04-29 | One who snitches |
| 2024-04-16 | ___ czar, N.Y.C. government position whose job listing called for "a virulent vehemence for vermin" |
| 2023-12-05 | Smallest of the Chinese zodiac animals |
| 2023-10-23 | Cousin of a mouse |
| 2023-10-18 | Tell (on) |
| 2023-10-17 | Fink |
| 2023-09-23 | Teller, perhaps |
| 2023-09-17 | Tell (on) |
| 2023-08-31 | Templeton of "Charlotte's Web," for one |
| 2023-07-17 | Tell (on) |
| 2023-07-11 | Rizzo the ___, "The Muppet Show" character |
| 2023-04-13 | No-goodnik |
| 2023-03-14 | One who snitches |
| 2022-11-13 | Chinese zodiac animal |
| 2022-11-05 | Peter Pettigrew's Animagus, in the Harry Potter books |
| 2022-09-04 | Teller, maybe |
| 2022-08-21 | Kangaroo ___ |
| 2022-05-28 | Name names |
| 2022-03-09 | Tattletale |
| 2022-02-13 | Ship pest |
| 2021-11-07 | Bad person to confess bad things to |
| 2021-09-02 | Snitch |
| 2021-08-09 | Pig follower in the Chinese zodiac |
| 2021-07-22 | Bad singer? |
| 2021-07-14 | Narc (on) |
| 2021-06-20 | Chinese zodiac animal |
| 2021-05-09 | Mobster's undoing |
| 2021-04-23 | Singer in the family? |
| 2021-02-17 | Squeaker or squealer |
| 2020-12-24 | Person not to be trusted |
| 2020-12-14 | Snitch (on) |
| 2020-10-27 | 2020 Chinese zodiac animal |
| 2020-10-17 | No-goodnik |
| 2020-09-28 | Dirty rotten scoundrel |
| 2020-09-19 | Double-crosser |
| 2020-08-12 | Chinese zodiac animal of 2020 |
| 2020-07-11 | One to sniff out |
| 2020-06-24 | Word before or after pack |
| 2020-05-25 | Cousin of a mouse |
| 2020-04-12 | Snitch |
| 2020-03-11 | Chinese zodiac animal of 2020 |
| 2019-06-23 | Teller? |
| 2019-05-23 | Animal feared by Winston in "1984" |
| 2019-03-01 | Year of the ___ (2008 or 2020) |
| 2018-12-11 | Snitch |
| 2018-12-09 | Traitor |
| 2018-11-10 | One might be paid to talk |
| 2018-11-06 | Untrustworthy sort |
| 2018-11-04 | Untrustworthy sort |
| 2018-09-17 | Subway scurrier |
| 2018-06-11 | Mob informant |
| 2018-05-10 | Snitch |
| 2017-10-16 | Fink |
| 2017-06-15 | *Lowdown scoundrel |
| 2017-06-08 | Allowance |
| 2017-06-04 | Templeton from "Charlotte's Web," e.g. |
| 2017-05-12 | Betrayer |
| 2017-05-10 | One violating omertà |
| 2017-04-22 | Tattle |
| 2017-03-08 | Maze runner |
| 2016-12-03 | Squeal |
| 2016-11-03 | Person not to be trusted |
| 2016-09-27 | Subway station sighting |
| 2016-05-23 | Cheese-loving pest |
| 2016-05-13 | One tailed in the sewers |
| 2016-05-08 | Double-crosser |
| 2016-04-11 | Snitch (on) |
| 2016-03-27 | Chinese calendar animal |
| 2016-03-21 | Deserter of a sinking ship |
| 2016-03-09 | No-goodnik |
| 2016-03-05 | No-goodnik |
| 2016-02-25 | Word that can precede or follow pack |
| 2016-02-10 | Mob hit victim, sometimes |
| 2016-02-08 | Pied Piper's follower |
| 2015-07-30 | Tell |
| 2015-04-08 | *Mob hit victim |
| 2015-02-13 | Chinese zodiac animal |
| 2014-12-31 | See 30-Down |
| 2014-11-02 | Quisling |
| 2014-10-30 | Teller? |
| 2014-10-05 | Fink |
| 2014-08-21 | Mobster's "canary" |
| 2014-05-07 | Tattle (on) |
| 2014-05-03 | Singer |
| 2014-03-25 | Fink |
| 2014-01-19 | Templeton, e.g., in "Charlotte's Web" |
| 2014-01-08 | Mob turncoat |
| 2013-12-11 | Turncoat |
| 2013-10-09 | Disloyal sort |
| 2013-09-11 | Cellar dweller |
| 2013-08-20 | Fink |
| 2013-08-01 | Chinese calendar figure |
| 2013-04-25 | Possible prey of a 37-Down |
| 2013-04-06 | Landfill visitor |
| 2013-02-04 | Singer who doesn't want a hit? |
| 2013-01-27 | The Pied Piper of Hamelin, e.g. |
| 2013-01-15 | Squeal (on) |
| 2012-11-02 | No-goodnik |
| 2012-10-21 | Tattler |
| 2012-09-25 | Year of the ___ (what 2008-09 was) |
| 2012-07-22 | Scoundrel |
| 2012-03-22 | Singer |
| 2012-01-11 | Turncoat |
| 2011-12-28 | Wharf pest |
| 2011-12-25 | Mob turncoat |
| 2011-09-15 | Subject of many lab tests |
| 2011-08-30 | Informer |
| 2011-05-30 | Snitch |
| 2011-05-15 | Teller |
| 2011-04-29 | Tell |
| 2011-03-27 | One in a maze |
| 2011-02-06 | No-goodnik |
| 2010-09-14 | It's smelled when something's fishy |
| 2010-08-18 | One who breaks the 16-Across |
| 2010-08-01 | Kangaroo ___ |
| 2010-07-14 | Unpopular mobster |
| 2010-07-12 | Double-crosser |
| 2010-07-11 | Singer |
| 2010-06-12 | Not a good confidant |
| 2010-04-07 | Chinese calendar animal ... or the key to this puzzle's theme |
| 2009-11-02 | Mafioso informer |
| 2009-07-20 | Squealer |
| 2009-06-17 | One down in the dumps? |
| 2009-03-02 | Squealer |
| 2009-02-04 | Fink |
| 2008-12-19 | Unpopular singer |
| 2008-12-01 | Mouse's big cousin |
| 2008-11-16 | "You dirty ___!" |
| 2008-09-22 | Lab maze runner |
| 2008-04-06 | Turncoat |
| 2008-03-08 | Turncoat |
| 2008-01-10 | Snitch |
| 2007-11-06 | Turn state's evidence |
| 2007-09-18 | Squealer |
| 2007-09-15 | Something often smelled |
| 2007-06-20 | Disloyal sort |
| 2007-05-24 | Runner of an experiment? |
| 2007-05-06 | Tell |
| 2007-04-12 | No-goodnik |
| 2007-03-30 | Drainpipe discovery |
| 2007-02-10 | Tell |
| 2007-01-18 | Fink |
| 2006-11-19 | No-goodnik |
| 2006-10-06 | Hardly a good friend |
| 2006-10-03 | Squeal (on) |
| 2006-08-01 | Squealer |
| 2006-06-04 | Backstabber |
| 2006-05-19 | Unpopular singer? |
| 2006-04-11 | Scoundrel |
| 2005-12-25 | Snake in the grass |
| 2005-11-08 | Stool pigeon |
| 2005-11-02 | No-goodnik |
| 2005-10-30 | Snitch |
| 2005-10-02 | Double-crosser |
| 2005-07-21 | Scoundrel |
| 2005-05-08 | Snitch |
| 2005-04-16 | Kind of race |
| 2005-04-03 | Squeal |
| 2005-03-16 | Untrustworthy sort |
| 2005-03-13 | Lab maze runner |
| 2004-12-26 | Common test subject |
| 2004-11-28 | No-goodnik |
| 2004-10-18 | Turncoat |
| 2004-08-02 | Squeal (on) |
| 2004-06-21 | Squealer |
| 2004-06-16 | Lowlife snitch |
| 2004-05-30 | Snitch |
| 2004-02-18 | Blow the whistle (on) |
| 2003-11-17 | Stoolie |
| 2003-10-26 | Snitch |
| 2003-05-19 | Long-tailed pest |
| 2003-04-28 | Snitch |
| 2003-03-21 | Common test taker |
| 2003-02-23 | No-goodnik |
| 2003-02-18 | Squealer |
| 2003-01-18 | Sing |
| 2002-10-25 | Bewhiskered trash collector |
| 2002-09-03 | Despicable one |
| 2002-07-07 | Judas |
| 2002-06-02 | Unfaithful one |
| 2002-05-16 | Scoundrel |
| 2001-08-31 | One living in a dump |
| 2001-07-27 | Backstabber |
| 2001-07-02 | Hamelin pest |
| 2001-07-01 | Stoolie |
| 2001-06-19 | Squealer |
| 2001-05-20 | Singer? |
| 2001-03-12 | Fink |
| 2000-12-22 | Nibbler |
| 2000-11-29 | Squeal |
| 2000-09-26 | See 41-Across |
| 2000-07-18 | Betrayer |
| 2000-06-10 | Dirty dog |
| 2000-05-31 | Turn state's evidence |
| 2000-05-05 | Slum sight |
| 2000-04-08 | Blackguard |
| 1999-11-29 | Squealer |
| 1999-11-09 | Scoundrel |
| 1999-11-07 | Maze runner |
| 1999-10-29 | No-goodnik |
| 1999-08-01 | Tattler |
| 1999-05-27 | 48-Across's prey |
| 1999-05-15 | Sing |
| 1999-04-27 | Hamelin critter |
| 1999-04-23 | Pack animal? |
| 1999-04-11 | Back-stabber |
| 1998-09-09 | Squeal |
| 1998-08-30 | Singer, of a sort |
| 1998-05-12 | One who blabs |
| 1998-03-03 | Lab runner |
| 1998-01-04 | Teller |
| 1997-12-15 | Stinker |
| 1997-11-07 | No-goodnik |
| 1997-10-23 | Informer |
| 1997-09-21 | Snitch |
| 1997-09-04 | Cagney epithet |
| 1997-08-24 | Snitch |
| 1997-07-20 | Squeal |
| 1997-06-19 | Deserter |
| 1997-06-05 | Betray, with "on" |
| 1997-03-15 | Skunk |
| 1997-03-02 | Squeal |
| 1996-11-10 | Turn state's evidence |
| 1996-09-24 | Stoolie |
| 1996-09-12 | Turncoat |
| 1996-09-01 | Squealer |
| 1996-07-29 | Fink (on) |
| 1996-07-19 | Informer |
| 1996-06-09 | Snitch |
| 1996-06-08 | Word in a Cagney impersonation |
| 1996-05-15 | Squealer |
| 1996-04-29 | Squeal (on) |
| 1996-01-21 | Slimeball |
| 1995-10-31 | Tell (on) |
| 1995-10-30 | Hamelin pest |
| 1995-09-15 | Deserter |
| 1995-08-09 | Singer, in a way |
| 1995-03-23 | Squealer |
| 1995-01-15 | _____ poison |
| 1994-12-15 | Informant |
| 1994-12-13 | Water _____ ("Wind in the Willows" character) |
| 1994-11-27 | Double-crosser |
| 1994-11-21 | Tell (on) |
| 1994-10-26 | Squeal (on) |
| 1994-10-18 | Inform (on) |
| 1994-09-09 | Pack animal? |
| 1994-06-26 | Stinker |
| 1994-06-15 | Tell (on) |
| 1994-05-11 | Ben in the film "Ben" |
| 1994-05-09 | Squealer |
| 1994-03-15 | Inform (on) |
| 1994-03-04 | Unloyal sort |
| 1994-02-16 | Squeal |
| 1993-12-02 | Snitch |