It was purchased for our 2 himalayan cats but also noticed our toy yorkies climbing on the first two levels! Our himis started clawing the posts the same day I put it together.[...] I'm extremely satisfied with my purchase...especially the price! The only thing is my himis are a little chubby and are jumping to the floor from the blue cube, (14 years old!) so I will need to either build out the 2nd shelf or just buy another smaller tree to help make it easier for them to get down.Next on my list: Majestic Pet 27" Casita Fur Cat Tree would be perfect to set beside my desk for my yorkies (or cats :)