The Neo-Soviet marine biomods
Classified as a category 4 threat, the Elib is somewhere between a vampire lord and Godzilla for limits of escalation. Yes, I would consider using a nuclear device to kill just one. I am that sure that I want it dead.
You type the command into the console. "Insufficient Guineapigs" the computer responds. Baffled, you retype the command. "Insufficient Guineapigs" the computer replies again. You decide you should start smaller, with a simpler command. "Insufficient Guineapigs"
What does cycling the spaceship's airlock have to do with a now-extinct Peruvian rodent?