Which animal is not a Chinese zodiac?

The Chinese animal zodiac, or shengxiao (‘born resembling’), is a repeating cycle of 12 years, with each year being represented by an animal and its reputed attributes. Identifying this scheme using the generic term "zodiac" reflects several superficial similarities to the Western zodiac: both have time cycles divided into 12 parts, each labels at least the majority of those parts with names of animals, and each is widely associated with a culture of ascribing a person's personality or events in his or her life to the supposed influence of the person's particular relationship to the cycle. Nevertheless, there are major differences between the two: the animals of the Chinese zodiac are not associated with constellations spanned by the ecliptic plane. The Chinese 12-part cycle traditionally was used to date the years. In order, the 12 animals are Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, Pig. Each year is associated with a zodiac animal.