Hairy looking red tennis shoes? Come on, Man, "It's Indiana!" A bison needs to have hooves. In this day and age of plastic molding, it shouldn't be difficult to fabricate a reasonable facsimile. Mottled shades of brown on acrylic "hooves" would mimic the dirt and excrement one might expect during a stampede along the Buffalo Trace. If we can't go real, let's at least make it look real.
Oh, and another thing...the nostrils need to snort smoke at the push of a button. A mascot needs to be able to work the crowd into a frenzy. Something as simple as a vape pen might be what takes them over the edge.