"Background clutter"

It's an AI generated image and you found one of the best telltale signs of such. The background doesn't contain anything except what the image generator thinks should be in the background of an image.

Other signs are the broken patterns on the cat bed, and the individual hairs on each cat looking super jank and some abruptly ending. Also the bed is levitating over a concrete floor.

i for one actually don't think it's AI, i think it might just be a bag of cat toys with a handkercheif on it. The cats and the bed look much too sensible to be AI imo.