Dogs are invited to bring their families to trick-or-treat and celebrate the holiday at Sherwood Dog Park in Paso Robles. Costumes are encouraged but optional. The pet costume contest is free and open to children and adults of all ages and their pets. The costume contest will be held at 11 am with prizes for the winners. Free hot cider and coffee will be served. Holiday family photos will be available for a $10 donation. Proceeds benefit Sherwood Dog Park and Parks4Pups, a non-profit organization. Rain cancels. Sherwood Dog Park of Paso Robles is located at 290 Scott Street (adjacent to the Senior Center). For more information, visit www.sherwooddogpark.org or call 805.239.9326.