Horse and Dog Race Down Sidewalk in Bizarre Russia Video

We've seen some crazy things in our time, but none of that compares to what's going on in Russia. In this wonderfully random clip, a horse and dog bolt down a sidewalk at top speed heading who knows where. Um, what goes on in Russia exactly?

The clip begins innocently enough, with speeding cars and pedestrians out for an idle stroll. But suddenly, people on the sidewalk dive for cover as a riderless horse and a dog streak by. Meanwhile, the pedestrians stare dumbly in shock and confusion. Yeah, that would be our reaction too.

It's anybody's guess what the two animals are doing or where they're going. The dog seems to be having a fine time, though, and barks like a maniac as he keeps pace with the horse.

What do you think is happening in this clip?