igil, m.n: a hedgehog, porcupine, an urchin. (“ee-yeel”)
From discarding images: Hedgehogs rolling to pick up food, from a 13th-century English bestiary: British Library, Royal 12 F XIII, fol. 45r.
If you like this image, check out this adorable video that explains how the hedgehog do (according to Latin Physiologus).