This picture is from a Tweet by @juliettebaba. It's not clear whether this is a deliberate alteration to accommodate a cat-centric household, an art piece, or possibly the natural result of having cats around a normal Christmas tree. But a clue came into the comments underneath that Tweet.
I swear this must be the pic from the year before. Same floor, same tree stand. pic.twitter.com/MMovQp7ciY— Bailey (@Mr_Bailey_Cat) December 10, 2017
The cats in the two pictures look like they may be related to each other, too. They must have a really destructive gene in the family. This was found in a collection of photos of cats in Christmas trees you can see at Mashable.