You might as well attempt to give the eagle the appearance of the serpent as try to teach it to crawl.
"The Expositor's Bible: The Gospel of St. John, Vol. I"
Marcus Dods
I followed him up slowly, by crawling through the brush-sometimes on my hands and knees, and at other times, after the manner of a serpent.
"Memoirs of Orange Jacobs"
Orange Jacobs
He has been sent into the presence of Saul to sing and play to him; for Saul is in the agony of that recurring spiritual conflict from which only David's song can deliver him; and when the boy-shepherd has crept his way into the darkness of the tent, he sees the monarch with arms outstretched against its poles, dumb, sightless, and stark, like the serpent in the solitude of the forest awaiting its transformation.
"A Handbook to the Works of Browning (6th ed.)"
Mrs. Sutherland Orr