Bears in December
The darkest night of the year — the winter equinox — carries little meaning for bears wedged snugly into dim dens. For them, each day and night runs together and forms the whole of a season of hibernation. Adult and juvenile bears snooze alone; mother bears and their cubs snuggle together for added warmth; and, in some dens, expectant mothers slumber, conserving their energy and calories for January and the beginning of yet another season of new life in Bear Country.
Primary Source: Breiter, Matthias, Bears: A Year in the Life, Firefly Books, 2005.