How Mark Zuckerberg celebrated his billion dollar acquisition of Instagram

Wrote Nick Bilton in a New York Times "Bits" blog post Tuesday: "Beast, Mark Zuckerberg's dog, had his moment of fame on Instagram Monday. The Facebook founder shared a picture [top] of the shaggy-haired mutt late in the evening after his company announced it was purchasing Instagram for $1 billion."    

"It was only Mr. Zuckerberg's fourth post since signing up for Instagram in October 2010. (That's $250 million a photo.)"

All four photos below.

Cheap at twice the price.