What the Fuck Happened to Mark Zuckerberg's Dog?

Remember Beast, Zuck's adorable pup, toast of Palo Alto dog parks? Receiver of treats? The animal with 1.5 million Facebook friends? Remember when it was a baby, as seen on the left? Now it looks like a big fungus nodule.

What the Fuck Happened to Mark Zuckerberg's Dog?

Is this normal for a dog? It doesn't look like an animal anymore, just a loose bundle of textiles. Is Beast OK? Has anyone spoken to Beast? Are any vets reading this?