Peeing like a racehorse. Why is it when our bladders are full to overflowing that we compare our need to void to that of a Thoroughbred?

Scientifically speaking, when it comes to urinary output, the larger the animal, the more he produces. So a Clydesdale’s stream is actually far more impressive that that of the average Thoroughbred racehorse. Of course, the only Clydesdales most of us see are those that star on Budweiser commercials, and any scenes of horses relieving themselves would be edited out. Racehorses, on the other hand, not only get more on-camera exposure during, say, Kentucky Derby time, they are also regularly observed at various tracks around the country. It’s not uncommon for trainers to administer Lasix, a diuretic, to their steeds before a race. Lasix not only prompts the the creature to empty his bladder before a race (thus making the horse lighter), studies have shown that it helps to reduce exercise-induced pulmonary hemorrhage, a phenomenon that may occur during a stressful race. So, with one thing and another, the common image of extreme peeing burned into many brains is that of horses like Man O’War.