Open the latch

Princess, there's a latch on top of this cage.

This is a deadbolt.

There's a latch on top of the cage. See if you can open it.

The grating of the door bolt was like a sword stroke to my ears.

Put a plank inside the door, it's a door bolt.

Then, this is a deadbolt. It's a fence from a 1930s shaper, which is a very angry woodworking machine.

And what he showed in mantis shrimp is that they use what's called a catch mechanism, or click mechanism.

And what this basically consists of is a large muscle that takes a good long time to contract, and a latch that prevents anything from moving.