So maybe some of us are in less of a position to laugh at people and animals who walk into things than others. After all, who among us hasn't at some point hit their head off a see-through door? Fine, nobody else put their hands up then, but you all know the shame, the embarrassment, the frustration.
Well this dog has one-up on all of us. Too clever to walk face first into a big-old pane of glass, he'll just wait to be let in. Take that humans.
Of course, the only problem is there's actually no glass there to begin with.