Historical clue formulations

• Does a dog trick — 2021-01-24
• Sounds off — 2006-11-14
• Pipes up — 2003-09-21
• Has words? — 2000-12-27
• Acts (for) — 1998-05-23
• Barks on cue, as a dog — 1996-12-26
• Does a dog trick — 1996-03-01
• Communicates — 1995-10-14
• Lectures — 1995-07-30