Join Date: Oct 2009
Location: Just south of sanity
No, cold water will not colic a horse whether it's sprayed on them or they drink it. Those are nothing but old wive's tales, and they've been debunked.
If you're hot, sweaty, and have been out in the heat all day, don't you want a cold drink and to maybe get squirted with the hose? Same goes for horses, and it won't hurt them any more than it'll hurt us. If you don't believe me, please consult your with your vet and they'll tell you the same thing.
The reason horses used to tie up more was because people believed you had to limit their water intake when they were hot. Now we know better, and allow horses to drink as much as they want when they're thirsty.
As far as overheating after being hosed, that won't happen if you scrape the excess water off them. The idea is to hose them off, letting the water run as long as it takes for them to cool down, then quickly scrape off the excess water.
You want the truth? You can't HANDLE the truth!