I recently purchased a cat "pyramid" from Petsmart and my cat, Jasmine, though curious, has yet to go inside it. This is my first attempt with cat furniture, but I figured since she likes to burrow in cardboard boxes, she might like a snuggly place to sleep that doesn't make noise when I'm asleep and that she can't fall into (anyone else have that issue?). She is a larger breed cat (Ragdoll) and a little overweight, so I'm wondering if the opening is just too small for her. She'll definitely fit inside, but I'm not sure she realizes that. Any ideas?