Bay Dun horses are bay horses with at least one Dun gene, which gives them Dun markings.
| Genetic Panel | ||||||
| Extension | Agouti | Grey | Cream/Pearl | Dun | Silver | Champagne |
| E/e or E/E | A/a or A/A | n/n | n/n | D/n or D/D | n/n | n/n |
| Shades | |
| Foal | |
 | |
| Bay Dun | Buttermilk Dun |
 |  |
| Coyote Dun | |
 | |
Base Color
Variants