Maybe I’m just too morbid, but I’m convinced this is a shrine. My imagination is running wild with “lonely old widow(er) has beloved dead pets stuffed in memoriam.”
I think the thing that stands out the most to me is the little dog on the right side, with his feet on the desk, looking directly at a picture of another dog.
That being said, I hope they were all alive during the taking of this photo. Fingers crossed.