The capybara is the world’s largest rodent, like a dog-sized guinea pig, native to most parts of South America. Despite their size, other animals really love to chill with the capybara, leaving the Internet to wonder why they're so popular among other species.

So what is the secret behind the capybaras cool attitude, and can they become the Internet's newest favorite animal?

Check out the video above for all of these answers and more. Also, make sure to subscribe to Mashable on YouTube for new episodes of Mashable Explains every week.