It's the end of the month! And that means it's time to take a look back at April's most viral posts, according to viral-tracking website BuzzFeed. Just like the March edition, these posts are among the strangest, most buzzworthy and most shareable content the Internet has to offer.
This list included everything from the president's birth-certificate and an adorable penguin. Let us know which posts were your favorites and if there were any other stories from April 2011 that you think should've made the list.