An Extraordinary Capacity

Despite their reputation for rapid increase and hyper-sexuality, hares are not especially prolific breeders compared to rabbits – much less so compared to rodents. . . . But the brown hare does exhibit one extraordinary reproductive capacity which has provided, in the exaggerated descriptions given of it from Aristotle onwards, the basis for its reputation for unique and almost preternatural sexual proclivities and increase.

Unlike most mammals, both female rabbits and hares will continue to mate while pregnant. But only the brown hare is capable of conceiving a second time – of carrying two potential litters at different stages of development. Superfetation, as it is called, can occur as a rare event in most mammals, even in humans. It has been recorded in populations of brown hares in up to 13 percent of females, a remarkably high and probably conservative figure. For Aristotle it was a primary characteristic of hares – and subsequent writers almost competed with each other to emphasize and exaggerate its miraculousness.

– Simon Carnell
Hare
pp. 34-35