This is a difficult dilemma. Possible reasons might be:
1. The horse has just got your number and therefore has learned that she can avoid work by rearing and intimidating the rider.
2. This mare might be having some ovarian issues and should be examined by a veterinarian to rule out ovarian cysts, which can be very painful for the horse. The pain is intensified by placing a saddle on the back and loin.
3. This could also be kidney issues.
Techniques to be tried would be:
1. Pony the horse with a another horse or donkey.
2. Find another trainer for a second opinion.
3. Consult a veterinarian to address the health issues outlined above.
Point of consideration:
If you choose to offer her for sale without resolving these issues, it would be unethical not to let a potential owner know of recent occurrences that could jeopardize a new owner's safety, even though we like to think "buyer beware."
Rule out any health issues by consulting with your veterinarian and then work toward alternative training methods that might break the habit this mare is developing. If this mare is only being ridden and trained intensely, you might consider trail riding and alternative routines. Ground work and getting back to the basics may be a good way to reduce the stress the mare might be experiencing and bring her back to a desired performance.
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horses, training, behavior, riding, rearing