I have 2 cats. They love the height of this tree and all the branches to perch from. They also love to retire in their houses when napping guessing they must feel safe in them being an enclosed area.  The perch extensions are all covered in rope material therefore will last a long time in which I will get my money's worth. My only suggestion would be would  have the rims of the perches be a little higher so the cats do not roll out of them when turning over when they are napping.  But over all I am very pleased with this product and when in need will purchase again from your store.