| 2026-05-10 | Plains animal in a herd |
| 2024-04-02 | Mammal whose scientific name is just its name repeated |
| 2023-08-12 | A baby one is called a red dog |
| 2023-05-19 | Bearded bovine |
| 2023-04-02 | Cause of some Yellowstone traffic jams |
| 2022-06-14 | Plains figure replaced by Monticello on U.S. nickels |
| 2021-01-23 | Yellowstone traffic halters |
| 2020-11-03 | National mammal of the United States |
| 2019-10-15 | Animal in some ancient cave art |
| 2019-01-06 | Range rovers |
| 2015-04-06 | Yellowstone Park grazer |
| 2010-11-10 | Animals in a Western herd |
| 2007-09-20 | Animal on the backs of three state quarters |
| 2003-02-13 | Range rover |
| 2002-11-05 | Image on an old nickel |
| 2001-11-19 | Yellowstone animal |
| 2001-02-08 | Protected animal |
| 2000-05-03 | Plains drifters |
| 2000-03-03 | Herd members |
| 1999-05-02 | Yellowstone sight |
| 1998-11-20 | Prairie sights |
| 1998-03-21 | Humped beast |
| 1997-10-22 | Plains roamers |
| 1996-01-29 | Yellowstone Park animal |
| 1994-08-24 | Plains critter |
| 1994-01-23 | Shaggy-maned mammal |