catulus

Ut catulus leonis Jehudah: e praeda, fili mi, ascendisti: incurvavit se, cubuit sicut leo, sicut leo major, quis suscitabit eum?

Commentary on Genesis - Volume 2 1509-1564 1996

If some portion of the intestine has escaped from a wound of the abdomen and is cut either longitudinally or transversely, while the major portion remains uninjured; if the wound has existed for some time and the exposed intestine is cold, some living animal, like a puppy (_catulus_), is to be killed, split longitudinally and placed over the intestine, until the latter is warmed, vivified by the natural heat and softened.

Gilbertus Anglicus Medicine of the Thirteenth Century Henry Ebenezer Handerson