The Very Cranky Bear

Moose, Lion, Zebra and Sheep take shelter in a cave on a cold and rainy day, only to realize that a bear is there. The bear roars loudly and says that he is trying to sleep. Not understanding why the bear is so cranky, the other animals come up with ways to cheer him up. Moose finds antlers for him, Lion gives him a mane, and Zebra paints on stripes. Is there anything the four well-meaning friends can do to help the bear sleep?