I thought they were pretty cute too.
I haven't seen one in person yet so I can't say with certainty, but from what I've heard from snake keepers who are using it, it "clicks" into a locking position or something??
Either way, I'm sure with some imagination it wouldn't be too difficult to figure out how to keep it locked.
I would probably melt a tiny hole into the clear plastic door and another tiny hole parallel on the turquoise part and install a little latch or something.
And I know the gecko people are starting to use it too without any locks... But then again, their animals aren't as determined as a snake. lol![]()