Greek Mythology >> Bestiary >> Legendary Creatures >> Unicorn Horse (Hippos Monokeras)


Greek Name

Ἱππος Μονοκερας
Ἱπποι Μονοκερατα


Hippos Monokeras
Hippoi Monokerata

Roman Name

Equus Unicornis
Equi Unicornes


One-Horned Horse
One-Horned Horses

Monoceras or Unicorn | Der Naturen Bloeme manuscript (1350) | National Library of the Netherlands
Monoceras or Unicorn, Der Naturen Bloeme manuscript (1350), National Library of the Netherlands

THE HIPPOS MONOKERAS (Unicorn Horse) was a breed of swift-footed unicorn native to the East. It was a magnificent, snow-white equine with a single, brightly-coloured horn rising from the middle of its forehead. The Greeks also named the creatures Onoi Monokerata (One-Horned Asses).

The unicorn of Medieval lore was derived from this creature of ancient legend.


Ctesias, Indica (summary from Photius, Myriobiblon 72) (trans. Freese) (Greek historian C4th B.C.) :
"In India there are wild asses [i.e. the Monokerata (Unicorns)] as large as horses, or even larger. Their body is white, their head dark red, their eyes bluish, and they have a horn in their forehead about a cubit in length. The lower part of the horn, for about two palms distance from the forehead, is quite white, the middle is black, the upper part, which terminates in a point, is a very flaming red. Those who drink out of cups made from it are proof against convulsions, epilepsy, and even poison, provided that before or after having taken it they drink some wine or water or other liquid out of these cups. The domestic and wild asses of other countries and all other solid-hoofed animals have neither huckle-bones nor gall-bladder, whereas the Indian asses have both. Their huckle-bone is the most beautiful that I have seen, like that of the ox in size and appearance; it is as heavy as lead and of the colour of cinnabar all through. These animals are very strong and swift; neither the horse nor any other animal can overtake them. At first they run slowly, but the longer they run their pace increases wonderfully, and becomes faster and faster. There is only one way of catching them. When they take their young to feed, if they are surrounded by a large number of horsemen, being unwilling to abandon their foals, they show fight, butt with their horns, kick, bite, and kill many men and horses. They are at last taken, after they have been pierced with arrows and spears; for it is impossible to capture them alive. Their flesh is too bitter to eat, and they are only hunted for the sake of the horns and huckle-bones."

Aelian, On Animals 3. 41 (trans. Scholfield) (Greek natural history C2nd A.D.) :
"India produces Hippoi Monokerata (One-horned Horses), they say, and the same country fosters Onoi Monokerata (One-horned Asses). And from these horns they make drinking-vessels, and if anyone puts a deadly poison in them and a man drinks, the plot will do him no harm. For it seems that the horn both of the horse and of the ass is an antidote to the poison."

Aelian, On Animals 4. 52 :
"I have learned that in India are born Wild Asses (Onoi) as big as horses [i.e. the Monokerata (Unicorns)]. All their body is white except for the head, which approaches purple, while their eyes give off a dark blue colour. They have a horn on their forehead as much as a cubit and half long; the lower part of the horn is white, the upper part is crimson, while the middle is jet-black. From these variegated horns, I am told, the Indians drink, but not all, only the most eminent Indians, and round them at intervals they lay rings of gold, as though they were decorating a beautiful arm of a statue with bracelets. And they say that a man who has drunk from this horn knows not, and is free from, incurable diseases: he will never be seized with convulsions nor with the sacred sickness (epilepsy), as it is called, nor be destroyed by poisons. Moreover if he had previously drunk some deadly stuff, he vomits it up and is restored to health.
It is believed that Asses, both the tame and the wild kind, all the world over and all other beasts with uncloven hoofs are without knucklebones and without gall in the liver; whereas those horned Asses of India, Ktesias (Ctesias) says, have knucklebones and are not without gall. Their knucklebones are said to be black, and if ground down are black inside as well. And these animals are far swifter than any ass or even than any horse or any deer. They begin to run, it is true at a gentle pace, but gradually gather strength until to pursue them is, in the language of poetry, to chase the unattainable.
When the dam gives birth and leads her new-born colts about, the sires herd with, and look after, them. And these Asses frequent the most desolate plains in India. So when the Indians go to hunt them, the Asses allow their colts, still tender and young, to pasture in their rear, while they themselves fight on their behalf and join battle with the horsemen and strike them with their horns. Now the strength of these horns is such that nothing can withstand their blows, but everything gives way and snaps or, it may be, is shattered and rendered useless. They have in the past even struck at the ribs of a horse, ripped it open, and disembowelled it. For that reason the horsemen dread coming to close quarters with them, since the penalty for so doing is a most lamentable death, and both they and their horses are killed. They can kick fearfully too. Moreover their bite goes so deep that they tear away everything that they have grasped. A full-grown Ass one would never capture alive : they are shot with javelins and arrows, and when dead the Indians strip them of their horns, which, as I said, they decorate. But the flesh of Indian Asses is uneatable, the reason being that it is naturally exceedingly bitter."

Philostratus, Life of Apollonius of Tyana 3. 2 (trans. Conybeare) (Greek biography C1st to C2nd A.D.) :
"And they say that wild asses are also to be captured in these marshes [of the Indian River Hydroates], and these creatures have a horn upon the forehead [Onoi Monokerata (Unicorns)], with which they butt like a bull and make a noble fight of it; the Indians make this horn into a cup, for they declare that no one can ever fall sick on the day on which he has drunk out of it, nor will any one who has done so be the worse for being wounded, and he will be able to pass through fire unscathed, and he is even immune from poisonous draughts which others would drink to their harm. Accordingly, this goblet is reserved for kings, and the king alone may indulge in the chase of this creature.
And Apollonios [C1st A.D. Greek prophet] says that he saw this animal, and admired its natural features; but when Damis asked him if he believed the story about the goblet, he answered : ‘I will believe it, if I find the king of the Indians hereabout to be immortal; for surely a man who can offer me or anyone else a draught potent against disease and so wholesome, he not be much more likely to imbibe it himself, and take a drink out of this horn every day even at the risk of intoxication? For no one, I conceive, would blame him for exceeding in such cups.’"

Pliny the Elder, Natural History 8. 31 (trans. Rackham) (Roman encyclopedia C1st A.D.) :
"But that the fiercest animal is the Monocerotem (Unicorn), which in the rest of the body resembles a horse, but in the head a stag, in the feet an elephant, and in the tail a boar, and has a deep bellow, and a single black horn three feet long projecting from the middle of the forehead. They say that it is impossible to capture this animal alive."






A complete bibliography of the translations quoted on this page.