Too small and overly flexible
Our no-breed doesn't fit in it. The hatch is tiny, too. Also, the plastic is so flexible, the box was bending while I was trying to push the retaining clips closed. Eventually had to stick my other hand in and push from the inside at the same time in order to get the clips to click.
Cat escaped through petting hatch
Tried to use the petting hatch to pet my distressed (adult) cat while taking her to the vet for her boosters today. She shoved her head through it, quickly followed by the rest of her, and escaped.