Post 22522
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The place where he hibernates preferably is a natural cave or a large opening beneath rocks. If completely sheltered in a cave, he is commonly satisfied to lie on bare rocks, with nothing over him. In other places, where the snow might come in contact with him, he commonly crawls beneath a huge pile of trash, leaves, sticks, and roots. Snow had drifted deeply over each hibernating-place I have found.
That his winter-sleep is more or less restless is shown in the spring by his hairless hips and sides, the hair having been worn off during the winter. This probably is due to frequent turnings from side to side.
He is generally fat when he turns in for his winter’s sleep; but usually he does not eat anything for a few days before going in. On the few occasions on which I was able to keep track of a bear for several days before he went to sleep he did not eat a single thing during the four or five days that immediately preceded retiring. I have examined a number of grizzlies that were killed while hibernating, and in every instance the stomach and intestines were entirely empty and clean. These facts lead me to think that bears do not eat just before hibernating.