I've caught her lying in the pasture before, so I didn't think much of it until I got closer. I offered her a bite of the enormous apple I was eating. She refused. Strange. When I first got her she didn't like apples, but the last few times I'd brought them she enjoyed having a piece. She stood up, and meanwhile a couple of the other horses came up to investigate. While I was distracted by them, Halo ambled off a few steps and lay down again. That was decidedly odd. And then as I observed, she went flat out.
At this, I became worried. I got her on her feet and led her out of the pasture. I listened for gut sounds and didn't hear much, and also noticed that she seemed to have recently had some diarrhea. I walked her for a while and checked again for gut sounds. She seemed rather listless, walking slowly and not showing much interest in grass or anything else. Fortunately the barn owner was at home, so I let her know what was going on and then continued walking Halo. She did try to lie down on me at one point, in a very stupid place right next to the electric fence. Fortunately she stayed on her feet and we kept walking.
By the time the food wagon came by with everyone's nightly feed she seemed to be perking up. Her illness could be caused by several factors. Yesterday she had her wolf teeth pulled, and they were big damn teeth (pictures forthcoming). I'm sure I wouldn't feel that great with a sore mouth and possibly some after-effects from sedation. She also got her rabies and West Nile vaccinations yesterday since I couldn't order them from Valley Vet Supply. In addition, new round bales were put in the pasture on Wednesday, and apparently a couple of other horses haven't been feeling well either.
Although she perked up, we chose to put her in the covered arena with another horse that was also not feeling well. She didn't poop while I was walking her, so we wanted to make sure she passed manure before feeding her anything else that might worsen an impaction. I think she's okay, but the barn owner will keep an eye on her tonight and call me if she starts acting strange again. I already had plans to go to the barn early tomorrow morning, so I'll get to check on her then as well. Horses!