A wolf was slaking his thirst at a stream, when a lamb left the side
of his shepherd, came down the creek to the wolf, passed round him
with considerable ostentation, and began drinking below.
"I beg you to observe," said the lamb, "that water does not commonly
run uphill; and my sipping here cannot possibly defile the current
where you are, even supposing my nose were no cleaner than yours,
which it is. So you have not the flimsiest pretext for slaying me."
"I am not aware, sir," replied the wolf, "that I require a pretext
for loving chops; it never occurred to me that one was necessary."
And he dined upon that lambkin with much apparent satisfaction.
This fable ought to convince any one that of two stories very similar
one needs not necessarily be a plagiarism.