Bear attacks may be rare, but visitors to Yellowstone should always be prepared and carry bear spray. Bears are protective of their space, food, and cubs, and most attacks are in response to surprise encounters with humans. (About 70% of human deaths from grizzly bears are from mothers defending cubs.) If people are unprepared, a bear encounter can result in severe injury or death. People who take the time to learn about bears and bear spray can avoid - and even stop - a bear attack. By learning more about bears, safety techniques, and how and when to use bear spray, you can enjoy exploring Yellowstone with the peace of mind that knowledge and self-protection provide. Visit our site for more information and safety videos: www.bearaware.com