"I bought this cage for my Chinchilla. He absolutely loves it, and has plenty of space to bounce and jump. Even adding some extra ledges along the sides has not made the place cramped. It's huge! But at first when he did start to get excited, going from place to place got really loud. I had to use pliers and imagination to secure the ramps and the platforms because it was "clang clang clang" every time he'd run or jump. If you use bedding in the bottom, this is not a cage you'll want in a carpeted area because the pan is so shallow the bedding all goes out onto the floor. Since my Chinnie is litter trained, that's not a problem for me because he has a blanket in the bottom, not bedding. Other than those two things, this is an excellent choice. It wasn't hard to put together, either. I did it by myself in about 15 minutes without needing hubby's help."