What animal is this?

new info for me.thanks

The Geordie Platypus, I was going to Colorado on I 70, in the early morning, sun just coming up, when I noticed a moving shadow keeping pace with my car. I slowed a little to look and it was a large group of pronghorns. Big ones, little one, moving all together. I had to stop for fear of an accident but those baby animals were certainly Precocious.

beautiful creatures!!