YouTube 2014 belonged to Katy Perry and a mutant giant spider dog

In some ways, on YouTube and Facebook, 2013 was the year of "The Harlem Shake." Now we have some YouTube data from 2014, and the story is a smidge different. 

This was the top trending video of the year:

[youtube https://www.youtube.com/watch?v=YoB8t0B4jx4&w=620&h=315]

(That's essentially a Polish short horror film.)

The No. 1 music video was Katy Perry:

[yo…