This is a baby chick, not a dragon. So what was it doing in the dragons' cave?

Young dragons are relatively defenseless. Their scales don't grow in until right before they mature, and they have almost no strength. Once a hatchling's wings grow in, it marks the beginning of maturation. At this point they are usually left alone by their mother and begin to hunt and survive on their own.

Lil bo Peep was a very odd hatchling.  She tended to stand in the rain looking up and the other dragons were afraid she would drown.  To help prevent her early demise she was frozen forever as a hatchling to help protect her special brand of life.