We have a Maltese/Mini Poodle puppy and this size (24' H) of pen is perfect. It is sturdy and well made. We fit a potty patch, dog bed, medium crate and her food bowl all in the pen. We placed the pen up against a wall and secured it with some taps on the wall to keep it from tipping. These also allow us to make her temporary living area a little bigger while we house train her.