Predators:
* Wolves: Wolves are known to hunt and kill pigs, especially young or weak ones.
* Bears: Larger bears, like grizzly bears, can definitely kill pigs.
* Mountain Lions: These large cats are powerful predators and could take down a pig.
* Coyotes: Coyotes are smaller but can still kill piglets or weak pigs.
* Wild Dogs: Packs of wild dogs, such as feral dogs, can pose a threat to pigs.
Other Animals:
* Boars: Wild boars are very aggressive and will defend their territory, potentially leading to fights with domestic pigs.
* Large Snakes: Some large snakes, like pythons, are capable of suffocating and killing a pig.
* Alligators: Alligators in their natural habitat could pose a threat to pigs that wander into their territory.
Note: The likelihood of a specific animal killing a pig depends on many factors, including the size and strength of the pig, the habitat, and the availability of other food sources.