Because if you don't, this might happen ?
I recently made thisfor Pancake and am letting it sit out for a couple weeks before putting it in her enclosure. Right now, it's on the floor next to her "house". Had her out running around awhile ago when she spotted her new hide and, naturally, made a beeline for it. Guys, she looked like me the time I misjudged my minimum clearance height while out caving and instantly became the laughingstock of the trip ??. Pancake was NOT amused when I pulled her back out. Oh well, at least she fits through the other opening on that end and into the hide on the opposite end.
I recently made this