The California State Department of Fish and Game is advising hikers, hunters, fishermen and golfers to take extra precautions and keep alert for bears while in the Yosemite and Mammoth areas. qCg中国英语学习网 qCg中国英语学习网 They advise people to wear noise-producing devices such as little bells on their clothing to alert but not startle the bear unexpectedly. They also advise carrying pepper spray in case of an encounter with a bear. qCg中国英语学习网 qCg中国英语学习网 It is also a good idea to watch for fresh signs of bear activity and know the difference between black bear and grizzly bear droppings. qCg中国英语学习网 qCg中国英语学习网 Black bear droppings are smaller and contain berries and possibly squirrel fur. Grizzly bear droppings have little bells in them and smell like pepper spray.qCg中国英语学习网