Some bears are foraging in the wild to find their next meal.
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But others are sniffing near homes for potential snacks left behind by humans.
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One Bay Area family learned how quickly a bear can strike, especially when you leave food inside a parked and unlocked SUV.
"He got the Hot Cheetos and he left, so about two minutes. He's visited a few times my car," said East Bay resident Kim Campbell. "He's left a few trails of mud, tore up some CDs, ate a few pairs of sunglasses. But all in all, not too much damage."
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Wildlife experts say it's important to never leave food or any scented products inside your vehicle.
They also suggest putting trash inside special, bear-resistant dumpsters.