I purchased this for my house bunny. I purchased the mall size, but wish I would have got the medium size. My bunny is small but the smaller size hutch doesn't offer much width after the taking the ramp into consideration. My bunny loves it though. My 17 year old daughter put this together in about 1.5 hours, but I'm sure it would have been much faster if an adult helped her. I use this indoor, so the slide out tray is a big bonus for cleaning. I plan to put this outside in the warmer Michigan months. If you plan to use outside please remember rabbit burrow, put some chicken wire on the bottom & stake the hutch down so  wild animals can not get to your beloved pets. Also woudl like to note that Wayfair was the cheapest price for this hutch online, plus I used their 10% off coupon & received free shipping