原版书书名：Mining the Social Web, 2nd Edition
The animal on the cover of Mining the Social Webis a groundhog (Marmota monax), also known as awoodchuck (a name derived from the Algonquin namewuchak). Groundhogs are famously associated with theUS/Canadian holiday Groundhog Day, held every February 2nd. Folklore holdsthat if the groundhog emerges from its burrow that day and sees its shadow,winter will continue for six more weeks. Proponents say that the rodentsforecast accurately 75 to 90 percent of the time. Many cities host famousgroundhog weather prognosticators, including Punxsutawney Phil (ofPunxsutawney, Pennsylvania, and the 1993 Bill Murray filmGroundhog Day). This legend perhaps originates from the fact that the groundhog is oneof the few species that enters true hibernation during the winter. Primarilyherbivorous, groundhogs will fatten up in the summer on vegetation, berries,nuts, insects, and the crops in human gardens, causing many people toconsider them pests. They then dig a winter burrow, and remain there fromOctober to March (although they may emerge earlier in temperate areas, or,presumably, if they will be the center of attention on their eponymousholiday). The groundhog is the largest member of the squirrel family, around16–26 inches long and weighing 4–9 pounds. It is equipped with curved, thickclaws ideal for digging, and two coats of fur: a dense grey undercoat and alighter-colored topcoat of longer hairs, which provides protection againstthe elements. Groundhogs range throughout most of Canada and northern regions of theUnited States, in places where open space and woodlands meet. They arecapable of climbing trees and swimming but are usually found on the ground,not far from the burrows they dig for sleeping, rearing their young, andseeking protection from predators. These burrows typically have two to fiveentrances, and up to 46 feet of tunnels.