YouTube's annual "Rewind" collection of online videos that won the most attention at the website was headed by Ylvis musically wondering what "The Fox" might say.
Fox outfits also wound up the most searched-for Halloween costumes this year, according to Google.
The video had logged more than 277 million views as of Wednesday.
Topping the YouTube music video list was PSY's "Gentleman," watched nearly 600 million times.
"While each annual list is unpredictable, trending videos just get bigger each year," YouTube head of culture and trends Kevin Allocca said in a blog post.
"And with 80 percent of all views on YouTube coming from outside the US, the global community is driving pop culture unlike ever before."
A channel featuring the year's top trending videos was available online.