The back of the box is open. This suggest that the cat walks in the back and sticks its face out the front. However, now I’m left to wonder how Beans gets out? Do they back out or does the owner have to open the box on the front for Beans to walk out?
I like your choice of books. How was the Von Braun book? One I don’t see on your shelf, but would recommend it would be “An Astronaut’s Guide to Life on Earth” by Chris Hadfield. There is a second book he did at the same time of just photography he took while at the ISS. Both are worth looking at.