New Chronicles of Rebecca by Kate Douglas Wiggin

The new minister's wife was sitting under the shade of her great maple early one morning, when she first saw the Little Prophet. A tiny figure came down the grass-grown road leading a cow by a rope. If it had been a small boy and a small cow, a middle-sized boy and an ordinary cow, or a grown man and a big cow, she might not have noticed them; but it was the combination of an infinitesimal boy and a huge cow that attracted her attention. She could not guess the child's years, she only knew that he was small for his age, whatever it was.

The cow was a dark red beast with a crumpled horn, a white star on her forehead, and a large surprised sort of eye. She had, of course, two eyes, and both were surprised, but the left one had an added hint of amazement in it by virtue of a few white hairs lurking accidentally in the centre of the eyebrow.