Birdhouse Play Tower by Green Duck www.petsmart.com - $89.99 Product Description: Cute and clever design looks like it's for the birds, but it's made especially for smaller cats. Quality construction includes solid, Douglas Fir posts, with the whole unit covered in fade-resistant carpet. Dimensions are 45"H x 21"L x 21"W. Due to the shape of the bird house this item is best for cats under 7 pounds. Easy to assemble using just a screwdriver; no nails, glue or chemical adhesives are used in construction. RattyRat's Review: Rats LOVE cat poles of all kinds. If you can afford it, they make a great toy. Rat's LOVE climbing them because they are so easy to climb, giving them great exercise. The best cat poles have hiding places for your rats to climb to and hide in. Our rats spent the bulk of their playtime on their cat pole and just loved it! The only reason we didn't give this toy five paws instead of four is because we can't figure out how to clean it as the urine builds up on it, so it looses a star for being hard to clean.