ReddEyeRex

(The stone circles are bugged for me and won’t let me finish them)

I’ve done all of the circle challenges but it shows that I’ve only done 14/15. I went back and checked each circle for the slash and the one in the cave at the top of the map doesn’t have a slash, but there isn’t a target to shoot anymore since I’ve already shot it. Any one have any idea on what to do?

I already have a Mustang and I’m wanting to get another horse, any ideas on what horse I should get?