It is really cold today, I’ve waited for this all October, I love cold, to wear jackets and to hug people, to drink coffee and eat chocolate, I like it a lot, and because of this I started to wonder how horses protect themselves from the cold, so I investigated a little and found a really interesting information about horse anatomy.

Many kinds of respiratory diseases commonly limit the use of horses for performance, so when the lung is diseased or inflamed, cells of the immune system travel there to help out and otect the horse, because horses have high numbers of T lymphocytes in their lungs, both in and around the airways.
The horse has very efficient respiratory and circulatory systems that enable it to race at high speeds without running short of air. While walking, a horse consumes only 1 liter (about 0.25 gallon) of oxygen a minute, but at a racing gallop, its oxygen consumption can approach 60 liters (nearly 15 gallons) per minute. At the gallop, the horse’s head and neck move up and down in rhythm with each stride. This motion tends to squeeze and expand the lungs, so that a galloping horse automatically takes exactly one breath per stride. This mechanism ensures that the faster the horse gallops, the more air it takes in.
Also horses have fur and a layer of fat under the skin that protect them from cold.
This is very important to have in mind so you can take care of your horse, even if it has a very well synchronized immune system, you need to be very careful if an illness strikes it.
Have a nice day and protect yourself from the cold.
"Welcome to Horse Health- The Immune System = The National Defense." A Complete Rider- Horses A Companion Web Site to The Complete Rider the TV Show. Web. 20 Oct. 2011. <http://www.completerider.com/immunesystemhorse.htm>.
"The Horse." Windt Im Wald Farm. Web. 20 Oct. 2011. <http://www.wiwfarm.com/The_Horse.html>.