I have 2 cats who were trying to share one perch so l decided we needed another. This arrived quickly and was unassembled but l (a very not mechanically-minded person) was quickly able to assemble it. While both cats have now used it to sleep in, they aren't using the post parts for their nails, but maybe they will. As far as size of this, my cats are big boys, about 12-14 lbs, and they fit fine (not together, of course!). My only complaints are 1) the parts that look like handles, that are over the posts, aren't padded. They are just hard wood covered with fabric. On our other post, bought at PetsMart, those areas are padded and my cats love to use them as pillows. 2) The color is weird, very gold, more so than in the picture.