OKAPIS
| Date | Clue |
|---|---|
| 2020-01-18 | So-called "African unicorns" |
| 2014-10-13 | Cousins of giraffes |
| 2011-12-11 | Cousins of giraffes |
| 2010-06-25 | Inhabitants of central African rain forests |
| 2007-04-27 | Rain forest denizens |
| 2006-04-01 | Striped animals |
| 2005-08-21 | Striped African animals |
| 2001-11-29 | Congo forest dwellers |
| 2000-08-06 | Nocturnal animals of the upper Congo |
| 1998-08-16 | Giraffes' cousins |
| 1997-09-03 | Giraffe-like ruminants |