Predator (4)
(Other definitions for lion that I've seen before include "Sought after celebrity (showing great strength and courage?)" , "cowardly character in Oz" , "one showing unusual courage?" , "Courageous person" , "Touring rugby player" .)
(Other definitions for wolf that I've seen before include "Predatory canine (or man?)" , "Pack animal; composer" , "philanderer" , "Beast, member of pack" , "Howling canine that hunts in packs" .)