Click here for a SLIDESHOW of all the Herrick images and additional information. Note that in the image this sow has already given birth when the wolf shows up and you can tell that Herrick had fun including the little piglets as part of the scene. The's illustration matches the English text (which I think must be Croxall), which begins: "A Sow had just farrowed, and lay in the stye, with her whole litter of pigs about her. A Wolf, who longed for one of them, but knew not how to come at it, endeavored to insinuate himself into the Sow's good opinion…"
M0331 = Perry547. Source: Barlow’s Aesop 13. This is Perry 547. Compare the fable of the wolves and dogs visiting the sick donkey, #229.