What is the plural of "caucus"?

I've been spending most of the weekend conducting a telepathic "Kitty Caucus" with Elektra, a very politically motivated cat who resides with The One Called Ange. Special topics have included a lengthy fillibuster on cats' rights. Any interested parties should contact Elektra. With your cat brain.

Also, I puked on the humans' bedspread today. Haw.