A Heavy Step

Quiet. Night. I stood motionless in the shadow of the large beast, claws fixed. Then, a low vibration rose within my chest. I flexed my right foot. It sank into the soft weave beneath me. Solid. Resilient. I shifted weight and nudged the heavy flank above. It did not budge. Good. My jaw parted, releasing a short, low rasp into the dark. I can move.