But of the times and the seasons , brethren, ye have no need that I write unto you. Now that we have all this modern technology and the satellite pictures we don't really need the Ground Hog. Woodchucks are the best-known hibernators among mammals. There they stay without moving until March. Ground squirrels, jumping mice, and some bats also hibernate, for four to seven months.
Bears are less perfect hibernators.
In the southern United States they remain active all through the year. In the North, black bears hibernate when winter comes, but when the cubs are born, their mothers care for them and nurse them. On warm winter days the male bears often wander about. Red squirrels and skunks, among other animals, do the same, and badgers as far south as Iowa hibernate during only the coldest weather. Sleeping is very different from hibernation.