Pliny the Elder described elephants and dragons in the 1st century AD in his Natural History:
“India that produces the largest elephant, as well as the dragon, which is perpetually at war with the elephant, and is itself of so enormous a size, as easily to envelope the elephants with its folds, and encircle them in its coils. The contest is equally fatal to both; the elephant, vanquished, falls to the earth, and by its weight, crushes the dragon which is entwined around it.”
“The dragon has much difficulty in climbing up to so great a height, and therefore, watching the road, which bears marks of the footsteps (of elephants) when going to feed, it darts down upon them from a lofty tree. The elephant knows that it is quite unable to struggle against the folds of the serpent, and so seeks for trees or rocks against which to rub itself. The dragon is on its guard against this, and tries to prevent it, by first of all confining the legs of the elephant with the folds of its tail; while the elephant, on the other hand, endeavors to disengage itself with its trunk. The dragon, however, thrusts its head into its nostrils, and thus, at the same moment, stops the breath and wounds the most tender parts. When it is met unexpectedly, the dragon raises itself up, faces its opponent, and flies more especially at the eyes; this is the reason why elephants are so often found blind, and worn to a skeleton with hunger and misery. What other cause can one assign for such mighty strifes as these, except that Nature is desirous, as it were, to make an exhibition for herself, in pitting such opponents against each other?”
There is another story, too, told in relation to these combats —the blood of the elephant, it is said, is remarkably cold; for which reason, in the parching heats of summer,1 it is sought by the dragon with remarkable avidity. It lies, therefore, coiled up and concealed in the rivers, in wait for the elephants, when they come to drink; upon which it darts out, fastens itself around the trunk, and then fixes its teeth behind the ear, that being the only place which the elephant cannot protect with the trunk. The dragons, it is said, are of such vast size, that they can swallow the whole of the blood; consequently, the elephant, being thus drained of its blood, falls to the earth exhausted; while the dragon, intoxicated with the draught, is crushed beneath it, and so shares its fate.”
To learn more about the history of dragons, see The Evil, Medieval Ancestors of Modern Dragons
(Book 8, Chapter 11 & 12)
13th century English manuscript; Courtesy of the British Library Catalogue of Illuminated Manuscripts.