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No people or pets are injured after black bear sightings outside of homes in Sonoma and Napa Counties. On Monday morning, black bears were spotted by residents of Guerneville and Napa. The California Department of Fish and Wildlife says there are about 30-thousand to 40-thousand black bears in the state. But, it’s unclear how many live in Sonoma County. Experts say, locally, black bear sightings are rare, but young males are more likely to be seen in the spring as they search for new hunting and mating grounds.