And you thought YOU were having a good day.

Yes, you may well be in a good mood (and if you're not, just look at these pictures). But we bet you're not as happy as the Doberman in the video above, who loves going down his water slide. And we mean: REALLY loves it.

And who can blame him? He's pretty adept at it, after all. In fact - he's almost as impressive as these pooches:

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Via Tastefully Offensive