I had a frightening collapse/colic/pain episode with my horse a few days ago:
http://www.chronofhorse.com/forum/showthread.php?t=315045
and the vet thinks he had a choke, made worse by some dehydration.
My horse almost always drinks when presented with the water trough, because it is usually two or more hours between troughs and by then, he’s thirsty.
Is there a way to train him to drink anyway, if it hasn’t been too long (say an hour) since the last trough, but it will be a while before we get to the next one? Or do they just learn that they ought to take advantage of food or drink presented?