I recently bought this cage for my Guinea Pig, Emmett. He absolutely loves it! He popcorns around and sings like never before. It has more than enough room for him to be as silly as he chooses. The only thing I didn't like was that it doesn't have a solid bottom, so it is not able to be transported without being broken down. Also, cleaning is a bit time consuming, because the liner has to be taken out, which is a bit of a chore. But, for me, it's all worth it so see my Emmett happy.