Here are some possible threats, though they are rare:
* Bears: Larger brown bears or polar bears might prey on a wolverine, especially if the wolverine is young, injured, or weakened.
* Wolves: Wolves might compete with wolverines for food and territory, and there's a chance of them killing a wolverine in a territorial fight.
* Humans: Humans are the biggest threat to wolverines, through habitat loss, hunting, and trapping.
However, it's important to remember that wolverines are incredibly strong, aggressive, and have sharp claws and teeth. They are not easy prey for any animal. They are more likely to win a fight than lose.