'Mutant giant spider dog' tops YouTube chart
A Polish film maker's short horror film featuring his pet dog in a tarantula costume was the biggest "trending" video on YouTube in 2014, parent company Google has announced.
With over 113m views since it was posted in September, Mutant Giant Spider Dog was the most shared and discussed online, according to YouTube.
Katy Perry's Dark Horse music video was the most popular with 715m views.
Facebook recorded over 3bn interactions about the Brazil World Cup this year.
The football tournament was "the most talked about event" on Facebook since the firm began measuring event-based chat, the company said, with over 350m people posting about the game.
However Brazil's presidential election attracted even more chat on the social media platform, with 674m interactions recorded by 48m people.
In the UK, the Scottish Referendum proved to be the year's biggest talking point with 3.3m interactions recorded on polling day alone.
The most played games on the Facebook platform were Bubble Witch 2 Saga and Candy Crush Soda Saga.
The most "checked in" place in the UK was the Warner Brothers Studio in London - home of the Harry Potter movie tour.
Google has released lists of the most watched material on YouTube in a blog post.
Swedish games commentator Felix Kjellberg, aka Pewdiepie, gained the most subscribers for his YouTube channel for the second year running, with over 32m subscribers.
"It's reassuring that the likes of YouTube and Facebook can reconnect us with both the lowest and highest forms of cultural content," said Simon Collister, senior lecturer in social media and communications at the London College of Communication.
"Despite that we need caution about relying too much on these platforms," he added.
"There's a whole debate about algorithms - particularly with news consumption - we have to be careful that we don't let the platforms themselves dictate too much to us what we should and shouldn't be watching."