Stone Circle give me the night and day

Her brothers response caused one ear to swivel backward. She antsily shifted her weight and extended a foreleg in the stone-shaped things direction. That!!! She gestured. It was still now, and Leta took a tentative step forward... when it hopped away once again Leta let out a nervous squeal and hopped back herself in fright. While normally curious, she had thought she had known what this was and was a little shocked that rocks could move like this... if it was a rock?