not a jackyl, a hyenna. my reasoning for the possibility would be that a smaller for game bred pit has the ability to get up underneath the hyenna's neck and latch on. theyre also a lot faster and more agile, and were bread to take down bulls. a bull would roll a hyenna. BUT, that pit would hafto get up on its neck FAST, cuz if the hyenna got a good bite on it first its toast. mind you im talkin about game bred pits, not the big muscular arnold shwartzapits.