Boo at the Zoo–San Francisco Zoo
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Mark your calendars for Boo at the Zoo featuring Sloth-oween on Saturday and Sunday, October 23-24 and 30-31. Guests of all ages are invited to come in costume to celebrate. As you journey through the zoo you will find a variety of haunted houses featuring fascinating facts about sloths. We're also excited to host a costume parade and contest each of these days at 12 noon. Reservations open up two weeks before desired visit date.