The snake was the Chinese zodiac sign for the beginning of 2014, from January 1 until January 30. Then the horse became the zodiac sign from January 31, 2014 until after the end of the year.
There are 12 total Chinese zodiac signs. In addition to snake and horse, the other signs are rat, ox, tiger, rabbit, dragon, sheep, monkey, rooster, dog and pig. Based on complex lunar phases, solar solstices and equinoxes, the traditional Chinese calendar follows a very different format from the modern calendar. This is why the 2014 zodiac sign changes at the end of January instead of on January 1.