Musical videos where dogs are in the center of it are plenty. But the majority of them are just for entertainment. How cute dogs look, or how beautiful their barf is etc. But this video is a whole other thing.
The owner of two dogs plays the piano, and after every key she hits lets the dog guess which key it was. And almost every time they know which key it was by pressing on another big piano that is in front of them. I find this very fascinating, because even I have no clue how piano works and each key is Do or Fa. It is incredible how talented and how good their hearing is.