San Francisco Bay Area dog owners please pay special attention. Wet husks from walnuts that fell from trees last fall can be poisonous to your dog.
Walnut poisoning seems to be a local phenomenon, occurring in Contra Costa County, parts of Alameda County and a few other areas around the San Francisco Bay Area.
If you or your neighbors have walnut trees — or there are fox squirrels around — carefully check out your yard and pick up any old walnuts you find. (If you don’t have walnut trees, squirrels can still bury nuts in your yard.)
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