Treating a horse for a significant injury is going to cost thousands in vet fees, phsiotherapy fees and the cost of the repeating use of recuperative drugs.
Veterinary advances have made treatment of even severe equine injuries possible but at a cost. The only means many people have of providing these services to their horse in case of disease or injury is through an insurance policy. There really is no other way that horse owners can afford them. Waking up one morning to a $5,000 bill is going to lead many uninsured owners to the inevitable conclusion as to whether they have to have the horse put down.
An application for pet insurance will require a veterinary examination and a health certificate before the horse can be covered.