Harvey confounding me

I went to see Harv tonight -- I snapped this photo of him and his little buddy Autumn when I first got to the barn  -- he seemed calm and alert, not at all ill.

I brought him into his stall, and he did not settle in. He was anxiously staring out the Dutch door and pacing -- not too surprising in that moment, as  his buddy was still outside. His buddy came in a bit later.

Harv didn't really seem much more settled, and he didn't eat his food when I set it down.

Hmmm.

I took off his blanket to find patchy sweat. It was not hot out by any means, around mid-fifties, and the blanket was light-weight. His nostrils were flaring, his breathing shallow. Pulse about 50. I wondered if being out 24/7 in this long stretch of nice weather had made him intolerant of the stall. Or maybe there were deer outside? It was now dark. I shut the Dutch door since looking outside seemed to alarm him. I tried to give him some banamine, but saliva is his superpower. Prodigious amounts the instant the syringe is squirted. He got at least some of it, but I can't say how much. An awful lot got spit out.

I watched Harv for about an hour. The sweat patches were larger now. He periodically was calling/bellowing, which is not what I'd expect in a colic. He pooped, which is good. He peed a bit, which made it seem unlikely that he was having a bladder issue -- given his peeing issue, I wondered if he had a blockage.

I called the vet -- she had me check his temp (normal), asked about his vitals. We discussed her coming out but by the time we spoke Harv was starting to calm down a bit. The banamine? We decided to give him a few hours. I just now got a report from the barn manager that "all is well."

So, for now, he is okay. Harvey, man of mystery, is scaring me.