Thanks for your replies. I will continue to educate myself. It just went so fast. At first the only sign was the not eating. From the time she showed other signs, (sweating, rolling, pawing, staggering) until the time she died, was only a little over an hour. I do not know about a place that would have tested her around here. (we live in ND) and it was hot here so we wanted to take care of her quickly. We called our vet on options of her final rest and were givien choices of the landfill or zoo which were not options to us or burying her. So we buried her in our pasture. Quite a lot of digging by hand for us, but it was worth it to have her close. My real concern now is my other mini. I know horses are social animals. Will he be okay alone? I really can't even think of replacing my Fancy right now.