Large animals in the middle of nowhere on land so flat you can see for miles? I hit a deer once in Pennsylvania so I'm wary of the possibility, but that only c

Large animals in the middle of nowhere on land so flat you can see for miles? I hit a deer once in Pennsylvania so I'm wary of the possibility, but that only concerns me when visibility next to the roads is poor. If there were corn fields or tall grass next to the road I'd be going slow.