Possible Tooth Found in Indiana Creek

[JHJ]

Hello,

My 6 year old son found this in a remote central Indiana creek yesterday. We looked a little online and it looks similar to a bison tooth but was hoping for some expert advice. We love the colors and were surprised how well it was preserved. We came across this site and wanted to see if anyone had any information. He was wading in the creek looking for shells and just pulled it out of the water. 
Thanks for any information you may have along possible age. He is so excited and can’t wait to show his teacher on their next video call. 

Edited April 23, 2020 by JHJ
Additional picture

[caldigger]

I'm thinking modern cow.