- If your horse is unable or unwilling to move
- Road traffic accidents
- Profuse bleeding: apply pressure, call vet
- Obvious or suspected fracture, the horse should not be moved
- Suspected signs of colic that last over thirty minutes don't delay longer
- Foaling difficulties
- Swollen, closed eye
- Azoturia
- Difficulty breathing or obviously distressed
- Lacerations requiring suturing
- Puncture wounds on dangerous sites like joints and tendon sheaths.
- If your horse's temperature is greater than 40C or 101.5F
- Suspected strangles
- Cases of choke that don't resolve themselves fairly quickly
- If your horse hasn't eaten or drunk for more than 6 hours
- If your horse has not passed faeces for longer than 12 hours
- Lameness unusual to the horse with indications of heat and swelling that don't show improvement within 36 hours
- Shock
