A $500 reward is being offered to solve the fatal shooting of a 4-year-old bison in western Michigan. The owners had assumed that the bison, named Goliath, died of natural causes this week near Stanton in Montcalm County. The Morning Sun and WZZM-TV report that a taxidermist later found bullet holes. Chad Stewart says Goliath was one of 20 bison at the Douglas Township ranch. He says the other animals knew that Goliath was gone and gathered Wednesday at the exact spot where he died.