Vernon Jones (1912)
61. THE ASS IN THE LION'S SKIN
An Ass found a Lion's Skin, and dressed himself up in it. Then he went about frightening every one he met, for they all took him to be a lion, men and beasts alike, and took to their heels when they saw him coming. Elated by the success of his trick, he loudly brayed in triumph. The Fox heard him, and recognised him at once for the Ass he was, and said to him, "Oho, my friend, it's you, is it? I, too, should have been afraid if I hadn't heard your voice."
Aesop's Fables: A New Translation by V.S. Vernon Jones with illustrations by Arthur Rackham (1912). This book is available online at Project Gutenberg.