We call em panthers out here, and I'm no expert with panther attack I do know large predators try to avoid each other in the wild, where an injury usually leads to death. Lgd are supposed to go out and look for predators, it's how there'r bred. I can see a cornered panther taking a swipe and then running so no, it wouldn't stay to fight necessarily. It may have a den near by which is why it's still there.
Good luck with the new dogs and things return to normal.
Good luck with the new dogs and things return to normal.