Feb. 2 is Groundhog Day! Did you know there is a special “groundhog punch” that keeps Punxsutawney Phil alive? This lets him see his shadow (or not).

The groundhogs — along with a tortoise, whose emergence from his winter hibernation foretells the coming of spring, and a prairie dog statue, whose shadow at sunrise predicts how long it will be until spring arrives — were ranked based on their accuracy over the past 20 years, using the March temperature averages for the U.S., NOAA said.