3rd stage custom rat house

Another thing i designed over on my Facebook page, it is a new house for my two rats, the box they had before was nothing more then a mushroom box and was ok at first but quickly became warped and had to be weighed down by a stone because it was so lightweight and so it was no longer useful, so i set out to design a new one that would be bigger and more cosy for them. This is the third and final stage of the box and after making sure everything fits properly i added a a few holes on either side for ventilation and to stick there noses through for treats, i started measuring out the mushroom box they were in as it seemed a good size and wanted to keep it but improve it a little bit and from there i made a box that can be very simply taken apart for cleaning. The parts do fit together in a specific way but as tricky as it may end up being it makes it relatively simple to put back together as it can only go one way, this was my first box made with these type of connections and so it is no