How scary. And dangerous. I'd have a hard time with this one in my 27 yr old horse. I had an old dog that started seizing a few weeks before I put her down because she started one day and didn't stop. Seized all the way to the emergency vet office. I cant imagine how dangerous that would be if a horse started seizing and didn't stop. It's so hard when they get old isn't it? On one hand, it's such a blessing to have my old girl (I've had her since she was 4), but I worry about her a lot more than I did when she was young.