Have an emergency? First, contact your vet, and inform him of the situation. Catch the horse and confine it in a stall or pen if it can be safely handled ~ providing a buddy may help keep the horse calm and quiet. Do a quick evaluation of its injuries or condition. While waiting for the vet to arrive, it’s a good idea to take the horse's vital signs every 15 to 20 minutes. Keep the vet informed of changes, which can indicate deterioration in the horses condition.