how much fish weight can a cat carry?

via videosift.com
I have no idea what is going on in this video other than it is amazing.

According to the comments under this video, the conclusion of the clip (starting with the writing against the sunrise over the earth) says:
'in this way a new piece of trivia is born into the world:'
'the [fish-stealing stray cat] that is chased by sazae-san can steal a maximum load of approximately a 2-kg bonito (fish)'