The Garden of Eden by Max Brand

First, a white flash beneath the shadow of the arched way, came a colt at full run, stopping short with four sprawling, braced feet at the sight of the strangers. It was not fear so much as surprise, for now it pricked its ears and advanced a dainty step or two. Ruth cried out with delight at the fawn-like beauty of the delicate creature. The Eden Gray was almost white in the little colt, and with its four dark stockings it seemed, when it ran, to be stepping on thin air. That impression was helped by the comparatively great length of the legs.

Next came the mother, walking, as though she was quite confident that no harm could come to her colt in this home of all good things, but with her fine head held high and her eyes luminous with concern, a little anxious because the youngster had been out of sight for a moment.