Two monsters from a series of the best and worst dreams I can remember:
A pair of eyeless, mouth-less dogs, covered in slimy fur matted with blood, with two long, seaweed-like tentacles growing out of their backs. They grab anything that gets near them and rip it apart. They attack each other when there's nothing left in the room, but are unable to do any damage. They're also bulletproof, bludgeon proof, and blade proof. In fact, the only way that they can be killed (at least that's the way it seems from my dreams) is fire, but even that seems like a temporary solution, as another one appears to replace the destroyed one. Finally, they seem to have a preference for killing white, silver, or gray kittens (never cats).
I'm sure that they represent something, but I honestly have no idea. Any ideas?
Edit: In the dreams, I'm always trying to find the kitten, only to have it A. Killed by the creatures B. Run away just before I can touch it, when the creatures show up or (most commonly) C. disappear to be replaced by the creatures.