Hammer's Colic

So this is just copied from another site:

So that running yesterday might have been a bad idea; today Hammer is colicking. I noticed it this morning, and as of now (7 PM) he isn't all better. He has stopped trying to lay down so often (only once in the past hour at least) but he still isn't eating or drinking. He hasn't broken a sweat all day, and he has remained clear eyed and alert. But we had a scare when he laid down and apparently had a seizure - we were sitting by him as he lay, but as he wasn't trying to roll we weren't trying to make him get up. But then we heard a loud gut sound and he laid flat and started twitching. His eyes rolled back in his head and when Kate tried to pull him up by the lead, he was completely unresponsive. I started pushing on his withers and got him partway up but he wasn't getting his legs under him so I punched him in the ribs a couple times. That woke him up and he jumped to his feet and started trotting around. He looked like he had no idea where he was for a minute.

He has only laid down once since then but Kate had him up pretty quick. He still isn't eating. Kate brought him some warm water as he has only drunk once today (and has not peed at all - only pooped twice and those were both small). But now it's my turn to stay with him for 20 minutes. Update soon.

Edit at 9:30 PM: He has eaten, and Kate said he was asleep when she went to check on him. I will check on him once before bed (hopefully soon - I haven't been this physically tired in a long time).