The majestic order Cephalopoda:
Octopus: Give them a jar of peanut butter, and they will open it faster than you can. And you’ve been opening peanut butter jars for twenty years.
Squid: Can be small and adorable, but also large enough to take out a sperm whale. A SPERM WHALE.
Cuttlefish: User of the most complex language of communication in the animal kingdom, besides humans.
AND THEN THERE’S THE NAUTILUS