Well, your unlikely meet one seeing as their a highly localized species that, aside from looking very nasty, is virtually harmless unless you try to hurt it. If you try to hurt them, they jump eight feet straight up and bite off your face then fuck your nizzle cavity while you bleed out.
My personal favorite creature ever:
The CuttlefishAnything you've ever heard about cephalopods doing, this thing can do it. It can fire tenticales to catch prey, fine manipulation with its limbs, change colors, change shape, shot ink, have some of the most advanced eyes in existance, some have deadly poisons, they have three hearts, and they literally have green blood (their blood cells contain copper rather than iron).
My players
will be fighting a Cuttlefish eventually. Problem is a like them so much that I'll probably kill the players with it.