It used to be that in order to see what you look like when you're on a roller coaster, you had to pay $10 for a blurry photo of you and the stranger next to you after you got off the ride.
When you have large groups of people walking in unison and playing music and wearing elaborate outfits and sometimes holding enormous, heavy instruments, you have the ingredients for disaster.
While we can't know for sure whether dogs really dream—we've asked ours a hundred times, can't get a clear answer—it's hard to reach any other conclusion after watching these pooches.
It can be hard to get an accurate idea of just how big, say, a giraffe actually is. Then one sticks its head in through your car window and you have a very, very clear idea.