What IS This?

I saw a herd of 4 in a pasture by our house last week, tongues hanging out and looking very lost. By that afternoon they'd crossed 3 pastures.

The next day I saw two of them running along the fence line across the road looking for a place to cross. Even when I got really close to them (backing down the two lane road in the wrong direction...unless you're reading, Mom or Dad, in which case I got this photo from a friend) and they became frightened, they still wouldn't jump the low fence.

This pic is of the young one (about 1/3 smaller than the other 3), as the only other pic I got captured the hind end of the older one. Not much help.

Can't wait to hear what they are!