Pesto, the penguin, a viral 50-pound king penguin chick, has become an online sensation with over 1.9 billion views across social media. What has fans so tuned in? Pesto's gender. Fans around the world waited for the momentous occasion when Sea Life Melbourne Aquarium revealed Pesto's gender via Facebook,

Among the sea of glossy black and white penguins that call a popular Australian aquarium home, one baby bird stands out like a sore thumb. Chocolatey brown, obscenely fluffy, and towering a head above his own foster parents – plus weighing more than both combined - is Pesto.

The internet loves big babies - at least according to the fervor around its latest super star, Pesto the seriously huge baby penguin.