[Yes they do]
http://wiki.answers.com/Q/What_do_bears_hunt
[ All bears are omnivores (they eat both meat and plant food just like humans) and eat a wide variety of foods including plants, berries, insects, fish, marmots and occasionally larger mammals such as deer, elk and mountain sheep. Because bears are built for power and digging and not agility they are not very effective hunters so any larger prey is usually obtained in the form of the very young, very old, sick or already deceased (bears commonly overpower better hunters such as wolves and mountain lions and steal their food). ]
http://www.grizzlybay.org/LearnMore/FeedingHabits.htm