Friday Cephalopod: I can't tell whether they're Communists or Republicans

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Two giant anteaters fight it out. On the left, the individuals lash out at each other with their enormous claws, and on the right they posture at each other (with the dominant animal, with the upright and puffed-out tail, on the right). From Kruetz et al 2009. In the northern state of Roraima in…
Did I ever tell you how exciting snails are? No, wait, don't go away... Oh well. Now the rest of you have settled down, I'll continue. My pic, incidentally, shows some Sphacterian snails I met in Greece this summer, which exhibited this odd clustering behaviour I've not seen before. But that's…