I had seen this video before, in fact I've posted it before, but it's worth a second look.
And it got me looking. There's lots of squirrel obstacle course videos out there. It seems that making squirrels work for their supper is a common pastime.
This one is from the BBC, and features the cutest of squirrels, the Eurasian Red Squirrel:
And this one is actually a beer commercial!
Yes, clever squirrels, indeed!