It was a chilly -13 F (-25C) this morning and local pet experts are recommending that everyone keep their pets indoors. People often ask how horses stay warm in the winter. The answer is their 'internal furnace' keeps them toasty in all but the most frigid, windy or rainy conditions.
Of course, if a cold wind blows its body heat away, or it gets soaked to the skin by a cold rain, it won't be able to stay warm. But as long a horse has a place to get out of the wind and rain, such as a run-in shelter, it won't be affected by the cold. Of course, to keep that internal furnace fed, high quality forage such as hay or grass is essential. Many people give their horses 'a little extra' during the coldest months, such as concentrated feeds. Understanding Your Horse's Digestive System will help you understand how ample feed during the colder months helps your horse stay warm.
Photo 2005 K. Blocksdorf
Understanding Your Horse: