My grandma grew up on a farm and they had two teams of plow horses, and a little cart pony, Dickie. My grandma wanted a riding horse for the longest time, and her dad finally bought her a mare named Lady when she was a teenager. The horses were in the same pasture as some of the other animals and there was a creek running through it, which was the animals' water source. My great-grandfather went out to feed them in the evening, but Lady didn't show up at the barn that night. He found her by the creek, and she had fallen and broken a leg. He ended up having to shoot her. My grandma, understandably, was devastated.
Now, I told you that story to tell you this story. We have some older horses at the barn and sometimes when I go to bring them in for feeding, one of them might not be waiting at the gate. I immediately think the worst and I start to feel sick. I think of Lady every single time a horse goes "missing". I eventually find the straggler hiding in some odd place, but I can't help it. I don't know why I'm like that. I have to say that one of my worst fears is going out and finding a dead or dying horse, and I especially worry about the super old horses. Particularly in the winter. Even if I was at a "normal" boarding facility, I would probably still worry if a horse didn't show up for dinner on time.