I had this problem just a minute ago and I was in the Flatlands/Grasslands and I was in the territory/place and I think it was called Blowingleaf Fields and that is where you hunt the Pronghorn Antelope and there is a little side mission and you have to hunt down a Big Pronghorn Antelope. Then when I started it i looked everywhere for it and I couldn't find it, all of the Pronghorns where 2X2 size. If anyone knows why this is or how to find the Pronghorn please tell me. Thanks.

videogamefreak94