Boo at the Zoo is Lincoln's largest trick-or-treat event. The entire family will love stopping at over 40 trick-or-treat booths to get candy, coupons and more! All the money raised during Boo at the Zoo directly supports the Zoo and care for the animals. Raising Cane's Chicken Fingers will be selling chicken finger meals with proceeds going to the Zoo. Purchase Raising Cane's meal tickets in advance online or with cash the night of the event.