Sources : Furionz

Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Quadrupeds 4.43): Furionz, as Aristotle says, is a lustful animal. It gorges itself on food and generally incurs dangers for this. It cannot last long, restraining this excess of corruption. This animal exercises the work of lust intemperately: for excess in food is followed by lust. For the genital organ is a continuous part of the belly, and because of the proximity of the members, the proximity of the vices often follows. When he copulates, he is lifted up and driven over the female in almost a grazing manner; and when he cannot complete all that he desires more licentiously, he cries and is restless at the time of intercourse. For in every animal nature denies much intercourse though he desires a great deal of lust. For the seed of intercourse is the power of the blood violently expelled. Wherefore whoever transgresses the limit in copulation, is frustrated in his due virtue, and death is brought upon him before the time. For it has often been heard of a man dying suddenly in intercourse, and this because his more ardent appetite drains his spirit and causes him to perish. Therefore, this animal Furionz mates after the manner of men: for the male is elevated from above, and the female, being subjugated, is equal under him. He never changes this order, although man himself, the most disordered of all animals, changes the order by his nature, so as to copulate from behind like a dog, or by standing like a hedgehog, or or with the woman above him, which is the vilest crime in any living thing: for no animal is found to do this except man. - [Badke translation/paraphrase]