Bears and Tigers dont have alot of stamina due to their bigness, it depends on which animal has the capability to go the distance.
They always talk about lions vs tigers. Same thing, some guys actually experimented and filmed this(animal cruelty) back in the 60s and the lion one due to stamina, even though the tiger was bigger. The lion had more stamina than the tiger and the lion managed to avoid fatal blows/bites. If the tiger could have landed a fatal bite or blow, especially for its' size it would take the lion on strength/power alone, but the lion was nimble enough to avoid that.
Elephant would slay them all