Downtown Fond du Lac will host the annual Monster March Saturday morning from 10 a.m. to Noon. Boys and Girls dressed in Halloween costumes will be able to trick or treat at participating businesses. Dusty Krikau of the Downtown Fond du Lac Partnership says it is fun for the whole family. The downtown will be blocked off from Western Avenue north to Rees Street. There will be crossing guards where streets are not fully closed. Pets can get in on it too. Victoria’s Pet Nutrition Center will be holding their annual pet costume contest. Studio 51 at Thelma Sadoff Center for the Arts will have Halloween crafts and cookie decorating as part of their Spooky Saturday from 11 a.m. to 2 p.m. The KFIZ Halloween Party is this Sunday at 5:30 p.m. It follows trick or treating in Fond du Lac and North Fond du Lac, which is from 3:30 to 5:30 p.m.