Memory:Chaos rat

This nasty thing has only a passing resemblance to rathood now. Its form melts and twists continually, occasionally dividing into two rats that rapidly grow to size. The air seems darker and strangely viscous around this rodent. The dirty fur scintillates slightly and appears to rustle though there's no wind here. Its shadow begins to move of its own accord, as though it were about to drift away and take solid shape.