Halloween Bash Midtown Mutts, a collaboration of Detroit K9 Pet Supplies and Detroit Shipping Company, is hosting a mutt Halloween Bash! Dogs are encouraged to come in costume for a dog Halloween parade at 6:00 p.m. to pick up a free pet trick-or-treat bag at Detroit K9 Pet Supply Store. There will be music, a dog costume contest, and tickets for raffle baskets and 50/50 will be available for purchase with 100% of proceeds benefitting Dog Aide. Dogs at the event must be on a leash at all times and must play well with others.