I love that it functions as a cat feeder and a cat tree. I have a small dog and she likes to try to get into the cat food. The only drawback on this is that I wish it was bigger. The box is pretty small. My 11 pound cat will fit into it but not comfortably. The 13 pound cat barely goes in there.  The area that the cats eat at could have a little bit more headroom. The two cats fit when they are eating but it would be nice if they could lift their head a little bit higher in that part of the structure. Maybe another 3 to 4 inches would help.￼￼