Pronghorn Antelope – They can run at speeds of up to 60 miles per hour in 20 foot bounds.  Most Pronghorns are in Wyoming.  These were photographed in Wyoming with a 500mm lens, except for the 14 Antelope running in single file which were photographed with a 70-200mm lens on Antelope Island in the Great Salt Lake.  They have branched horns (not antlers) which they shed.