2. Call your veterinarian. A high fever can be a sign of a serious underlying medical condition, so it's important to call your veterinarian as soon as possible.
3. Monitor your horse's condition. In addition to monitoring your horse's temperature, you should also watch for other signs of illness, such as:
* Lethargy
* Loss of appetite
* Increased thirst
* Rapid breathing
* Diarrhea
* Nasal discharge
4. Provide supportive care. While you're waiting for your veterinarian to arrive, you can provide supportive care for your horse by doing the following:
* Offer your horse fresh water and hay.
* Keep your horse in a cool, draft-free environment.
* Apply cold compresses to your horse's head and neck.
* Monitor your horse's vital signs.