Historical clue formulations

• Jump (on) — 2025-02-17
• Big cats and opportunists both do this — 2024-05-15
• Seize an opportunity — 2023-05-21
• Not let a big opportunity slip by, say — 2015-06-28
• Spring — 2015-01-04
• Attack suddenly — 2006-11-30
• Attack suddenly — 2003-08-02
• Sudden swoop — 1997-09-20
• Sudden seizure? — 1997-06-13
• Jump (on) — 1997-03-30