Ylvis' "The Fox (What Does the Fox Say?)" has helped the Norwegian duo gain international fame. Thus, it's not exaggerating that YouTube dubs it the Top Trending Video of 2013. The funny clip, which has been viewed more than 270 million times since it's released on September 3, places first on the list which also includes Miley Cyrus' "Wrecking Ball" at No. 4, AceShowbiz said.

In the Top Trending Music Videos, meanwhile, last year's viral hit PSY rules with his music video for "Gentleman". Cyrus claims two spots, the runner-up and the third places, with "Wrecking Ball" and "We Can't Stop" videos respectively.

Katy Perry's "Roar" places fourth, while Pink's "Just Give Me a Reason" feat. Nate Ruess lands on the fifth spot. Rounding up the top ten are Robin Thicke's "Blurred Lines" ft. T.I. and Pharrell Williams, Rihanna's Stay feat. Mikky Ekko, Naughty Boy's "La La La" feat. Sam Smith, Selena Gomez's "Come & Get It" and Avicii's "Wake Me Up".

As for the YouTube channels seeing the biggest gains in subscribers, Swedish video game commentator Pewdiepie leads other channels, with Rihanna's and One Direction's VEVO channels among the top five.