The Japanese: こんにちは！

Put suspicious cats into sandboxes until it’s proven that they are crewmates.

You can use less. There are also specialized ones for that purpose like bat.

I always thought it’s

head | cat | tail

It, of course, waits for an input, which brings up the one and only question…

Have you fed your cat?

$ touch woman
touch: cannot touch 'woman': Permission denied