Once in hibernation, bears in Yosemite typically don't become active again until late March or April.
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Bear AttacksAttacks are rare—nobody has been killed or seriously injured by a bear in Yosemite. If a black bear approaches, always follow the above guidelines. If a black bear attacks while you're in Yosemite, fight back.
Make sure you know before you go. In national parks where grizzlies live, such as Glacier or Grand Teton, rangers encourage you to carry bear spray. In others, such as Yosemite, where only black bears live, bear spray is not even permitted.
Mountain lions—also called cougars, pumas or panthers—roam Yosemite's mountains and valleys. These important predators, native to the Americas, are a natural part of the Yosemite landscape.
These large individuals of the Mountain Coyote are the present day wolves of the Yosemite region. No true wolf is known to have occurred anywhere in middle California since about 1870.