» Dunkirk Dave's Groundhog Haven    Information about groundhog Dunkirk Dave and other groundhogs in captivity and in the wild; links to other groundhog sites.    http://www.dunkirkdave.com/

» FactMonster: Groundhog Day    Offers a simple history of the observance.    http://www.factmonster.com/spot/groundhogday1.html

» Fermilab Woodchucks    Fermilab, in Illinois, has woodchucks (also known as groundhogs) that live happily on the lab's 6,800 acres.    http://ed.fnal.gov/entry_exhibits/woodchuck/woodchuck.html

» Groundhog Day History    With folklore and winter weatherlore, from stormfax.com.    http://www.stormfax.com/ghogday.htm

» Groundhogs at HogHaven    Learn all about a colony of groundhogs that live in Delaware.    http://www.hoghaven.com/

» Wiarton Willie    Canada's answer to Punxsutawney Phil.    http://www.southbrucepeninsula.com/index.cfm?member=willie