The females and young were watched over by this handsome buck. Both males and females have two-pointed horns which are composed of keratin growing over a bony center. I was surprised to learn that the hair-like part of the horn is shed annually. The pronghorn is either "the second-fastest land mammal in the world, able to travel over 53 mph," or "among the speediest animals in North America." I'm not sure which is a more accurate description...like so many things, it just depends on the source of your "facts."
Farther along the Wildlife Loop, we came across a small flock of sharp-tailed grouse foraging beside the road. This individual was very curious about our car, and stood still long enough for me to take a couple of photos. I think this may be a young bird. If you look closely at the feathers on its neck, they look a little "downy." Perhaps the youngster just wasn't old and wise enough to be afraid.
Not far from the donkeys we passed a prairie dog town. Kota and Nickie were most interested in this little fellow and his friends.
We didn't see the ranger who was keeping watch from the tower, but we did see the magnificent panorama from the top. To the east, you can see all the way to the Badlands, and to the west Custer and the Crazy Horse Memorial. On our way down, we took this photo of The Needles, a rock formation on the northern edge of the park. Even on a hazy day like this one it's still an impressive sight.