The first new moon of the lunar calendar officially ushered in the new year in many cultures Wednesday, marking the imminent arrival of spring and the first day of the Year of the Snake, which symbolizes good luck, rebirth and regality.

Know how the Chinese Lunar Calendar works, and what it means for your zodiac sign. Learn key insights for career, finances, and relationships.

In honor of the Year of the Snake, let’s appreciate the strange anatomy and evolution of these slithery reptiles