He laughs bitterly. It's a series of sort of pops like sparks that probably take a second or two to interpret correctly.

<It's to press my tail to the throat of whoever's managed to sneak up on me and assess if they're a real threat before twitching. I just thought you wouldn't appreciate that demonstration. But, yes, we are supposed to kill ourselves if we think there's a good chance of being captured.> Which he hadn't been able to do, quite obviously.

<Yes, you do that.>