Man on Horseback...with a Dog?

Now here's a sight you don't see everyday! I was on my way back from Wally World (no, I was not on "Vacation;" that's Wal-Mart for those of you who aren't familiar with the term), my dog riding in the backseat, when what should I see in front of me but a man AND man's best friend on horseback. They were walking down a 2-lane highway and I couldn't get around them for the longest, so I decided this would at least give me the opportunity to snap an almost-once-in-a-lifetime picture (because now that I'm putting this out on the web, I'm sure at least somebody else out there is gonna try it!)

You may have to look close to see the dog, so here's a hint - the dog is black and brown and is pointed to the right. (you may want to double-click on the photo to blow it up for a better view!)