Saddle up my babies, it's National Day of the Horse. Celebrated each year on December 13th, this day of days encourages the people of the United States to contemplate and venerate the role and contribution of horses to the history, economy, military and cultural makeup of our country. In honor of these storied, sentient, soulful animals we bring you a list of the zodiac signs as horse breeds. Read on, ride on, right on and yippee ki-yay.