The thunderous blast made me stop digging. What was this? Had a tree fallen? Was it another rabbit? I sniffed. No sign of storm clouds in the air. No sign of other rabbits in the vicinity. I hadn’t imagined it, of that I was sure. Something thumped louder than any thump I had ever heard. But, though I waited a long time, I didn’t hear it again. I decided to respond, just in case. Can’t have some other creature moving in on my cave! I thumped my foot.