Costume-wearing pets and kids are invited to participate in Scary Tails Trick-or-Treat, being held from noon to 4 p.m., Saturday, October 29 at the White Lake Pet Supplies Plus at 6845 Highland Rd. and Sunday, October 30 at the Bloomfield Twp. Pet Supplies Plus store at 2057 S. Telegraph Rd. Trick-or-treaters will get a free Pet Supplies Plus begging bag. There is no charge to participate in the event.