Bullmastiff Studs
- indicates a dog that requires approval to be used
as a stud. When using these studs, you may have to wait up to
24-hours to breed your bitch. Dogs open for public stud can be used
for breeding right now.
| Dog Name | SOP | Color | Owner | Stud Fee |
| GCH CH UDOnyxx Dream Weaver | 27.0 | Red Fawn Brindle | Onyxx | $100 |
| GCH CH UDOnyxx Speed Racer | 27.6 | Red Fawn | Onyxx | $100 |
| GCH CH UDOnyxx California Dreaming | 26.9 | Red | Onyxx | $100 |
| GCH CH UDSpirit Ranch Survivor | 28.5 | Red Fawn Brindle | Onyxx | $100 |
