Groundhog Learning Zone
Groundhog information including pictures and an interactive groundhog puzzle.
Punxsutawney Phil Official Site (New Window)
Includes some groundhog facts, and a year by year record of whether the groundhog saw his shadow on Groundhog Day.
Hog Haven: Groundhogs (New Window)
Extensive information about groundhogs for all ages.
Groundhog Day Facts and Factoids (New Window)
Interesting facts about the groundhog. Also attempts to answer the famous Question - How much wood could a woodchuck chuck if a woodchuck could chuck wood!
Wikipedia: Groundhog (New Window)
Wikipedia information about the Groundhog including anatomy, behavior and more..