I bought a x-pen that is 30in tall. I keep my 2lbs lionhead in our apartment living room which you can imagine is kind of small. The x-pen is an eye sore because it's so tall. I want to get the same one just 24" tall instead. Is 24" a save height so my little bunny won't jump out? I know that I can't put tall play boxes In there but anyone have any experience with heights of their x-pen?