Les chevaux peuvent être inscrits sur cette liste pour des raisons de maladie, de santé générale ou d’aptitude à la course.
| Nom du cheval | Race | Ajouté le | Lieu | Retiré le | Official Vet Exam | Work | Qualify | Vet List Type |
|---|---|---|---|---|---|---|---|---|
| Ohmyshe'ssofine | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Omegna | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| One Lucky Woman | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| ONE MORE BET | Standardbred | Mohawk Park | No | Short List | ||||
| One More Ring | Thoroughbred | Fort Erie Racetrack | Yes | |||||
| One Night | Thoroughbred | Woodbine Racetrack | No | X | ||||
| Onezy's Dream | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| ONIMPULSE | Standardbred | The Raceway at Western Fair District | Yes | X | Long List | |||
| Ookpik | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Oopsy | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| ORLYS ANGEL | Standardbred | Rideau Carleton Raceway | No | Short List | ||||
| Ostracism | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Ourfirstorphan | Quarter Horse | Ajax Downs | No | X | ||||
| OUTLAWSKYSTHELIMIT | Standardbred | Hanover Raceway | Yes | X | Long List | |||
| P S Charlie Brown | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| Pacenza | Thoroughbred | Fort Erie Racetrack | Yes | X | ||||
| Paint the Meun | Quarter Horse | Ajax Downs | Yes | X | ||||
| Painting the Moon | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Palace Ring | Thoroughbred | Woodbine Racetrack | Yes | X | ||||
| Paschali | Thoroughbred | Woodbine Racetrack | No | X |