I am doing my speech on colic so this is very helpful. And just last month my horse was so close to dying from colic. Yhe vetrenarian didn't think she would live. So if you read this than you know if you notice any symptoms that it is very important that you call your vet, take away your horse's feed, and walk them slowly around and around and around until the vet gets their to make sure they don't get intestinal catastrophe.
i also found out that some horses arent used to differnt tasing water, resulting in them not drinking enough. [they will get dehidrated] and so an idea for those owners out there whos horse wont drink anything but whats from home, you can try putting a little grain in their water, to get them to drink. it makes it somewhat salty, which makes him more thirsty, and when water tastes like grain, what horse wont drink it?!? :}