Quaestiones Naturales

ANTIPATER in his History of Animals affirms, that shewolves exclude forth their young ones about the time that mast trees shed their blossoms, for upon the taste thereof their wombs open; but if there be none of such blooms to be had, then their young die within the body and never come to light. Moreover, he saith, those countries which bring not forth oaks and mast are never troubled nor spoiled with wolves. Some attribute all this to a tale that goes of Latona; who being with child, and finding no abiding place of rest and safety by reason of Juno for the space of twelve days, went to Delos, and, being transmuted by Jupiter into a wolf, obtained at his hands that all wolves for ever after might within that time be delivered of their young.