After riding our horses, Sunny and Cisco, yesterday on a warm day for three hours, they tanked up at the horse trough. I noticed Sunny swallowed 30 gulps of water and drew down the bucket 4 cm. Armed with a calculator and my considerable knowledge of algebra, I calculated that he drank just under 7 L of water in well under a minute, with an average 233 ml per gulp. Just in case you might want to know this important tidbit. It's said that a horse will drink 55 L on a hot day, if he is exercising. HARRY WYETH
