Hoorah! YouTube phenomenon Ze Frank has followed up his wonderful 'Sad Cat Diary' with - you guessed it - 'Sad Dog Diary'.
So if you want to get to know the inner workings of a (sad) dog's brain, simply click play on the video above.
From sniffing bottoms to those strange creatures called cats, it's all there in sad, canine form.
(Via Viral Viral Videos)