Mark Zuckerberg Celebrates 5 Years With His Favorite Ball Of Fur

It's been five years since Facebook creator Mark Zuckerberg welcomed the fluffy Hungarian sheepdog named Beast into his family, and this past weekend, he shared one of his favorite photos of Beast along with a few kind words.

"In the spirit of this holiday weekend, I want to share the most joyful photo of Beast jumping I've ever seen," Zuckerberg wrote in the caption. "Even after living with this guy for five years, seeing him bounce around still makes me smile. I hope your holiday weekend has been joyful too."

It's been a beautiful five years together. Below are a few highlights from the family's photo collection.

Here's one of the first photos of Zuckerberg and Beast together.

As you can see, Beast has been a jumping enthusiast from a very young age.

Here's Beast celebrating his second birthday with a special bone.

Beast tried a new hairstyle to celebrate Pride this past summer.

"He sat like this for hours," Zuckerberg captioned the photo.

Here's a more recent photo of Beast looking particularly moppy.

Here's one from only a few days ago, as the Zuckerbergs prepare for the arrival of the newest member of their family.

Of course, both Zuckerberg and Beast have their own Facebook pages. Follow both for updates on their adventures together.