A neighborhood bully can come in all shapes and sizes. In one San Francisco Bay Area town, it comes with fur.

An aggressive neighborhood squirrel has locals nervous after it attacked several residents, prompting visits to the emergency room for bites and scratches to their arms and legs, according to a local humane society and a resident.

The attacks in the Lucas Valley neighborhood of San Rafael were confirmed by Lisa Bloch, the director of marketing and communications at Marin Humane. She said she knows of at least two people who went to the ER to be treated for squirrel-inflicted lacerations, out of an abundance of caution.

One of those squirrel victims was Joan Heblack, 80, who has lived in her Lucas Valley home for about 11 years and has never had problems with squirrels until she

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