ZooMontana is celebrating Earth Day and Autism Awareness Month from 10 a.m. to 3 p.m. Friday with a barbecue and the debut of the zoo's three grizzly bear cubs.
The cubs arrived at the zoo last summer from the wild after their mother was euthanized. The cubs and their mother killed a Michigan man and injured two others at the Soda Butte Campground outside Cooke City.
The cubs join the zoo's two other resident bears.
The cubs won't be the only attraction on Friday. Anyone who comes to the zoo with an aluminum can or used cell phone will be admitted to the zoo for $3.25.
The Billings Heights' Lions Club is cooking hamburgers and hot dogs provided by Costco throughout the afternoon to raise funds for the zoo.
A portion of proceeds from Summer Snow, a group selling flavored shaved ice, will also benefit the zoo.
Daniel Lundquist, zoo director of marketing and development, said the event is a thank you to community supporters, as well as Livin' Large Larry and TownSquare Media who first created and facilitated a fundraiser whose goal was to see the grizzly cubs go public.