Beware!
I purchased this house for my gerbils last year and at the time was well pleased with it as it was natural wood and sturdy. However I have since noticed that it has been stapled together and with my gerbils gnawing at it (as rodents tend to do), they have exposed the staples which have sharp ends on them. For this reason, I would just like to say that if you purchase it, check when cleaning your pets housing, that there are no exposed staples which could injure your animals. I also bought tunnels in the same range and they also had staples.