dear fiction writers:
as far as I know, there is no large carnivore who would abandon actively eating a killed meal to chase live prey. chasing and hunting live prey is a risk, as a healthy live creature has the capability to injure a carnivore, or tire it out through the chase. If there is, say, a giant pile of dead bodies to eat, which abandoning would allow other carnivores or scavengers to steal and eat instead, it makes no sense at all.
please stop doing that thing
The sole exception I can think of is if the large carnivore thought the live prey was another carnivore or scavenger, and was chasing them as a threat display to ensure they didn’t steal the dead bodies. Even in that case, though, it would only be a short, mock charge followed by returning to the pile if the opponent fled. With possibly whatever the animal’s equivalent of “and stay out” would be.
Another thing: most carnivores don’t like to fight. They have to mug something to death for every single meal, they have to stay in top shape while conserving their energy. Meanwhile, herbivores have plenty of extra energy because they eat stuff that comes out of the ground and doesn’t fight back, and they often live in big social groups, so they’re better at handling stress and more used to having to actually come to blows with other animals to get their way.
So like, a zebra will try kick your ass just to see what’s up. A tiger won’t do shit unless it’s damn sure it can take you. I’d rather come face to face with a cougar than a stag— have you seen videos of what happens to hunters when a stag catches a dude on the ground? the stag tears the dude apart. Not even to eat him. Just because the stag didn’t like what was going on and decided it was time to curb stomp a motherfucker.
So if you’re deciding what kind of Big Scary Animals to have be a threat, like, forget wolves and lions and eagles and velociraptors. Go drop in a moose.