Large Mammals:
* Bears: Black bears, brown bears, and polar bears can all prey on otters.
* Wolves: Wolves can hunt otters, especially in areas where their ranges overlap.
* Coyotes: Coyotes can occasionally prey on smaller otters, especially young ones.
* Larger Otters: Some otter species, like sea otters, can fall victim to larger marine mammals such as killer whales and sharks.
Birds:
* Eagles: Golden eagles and other large raptors may occasionally hunt otters, particularly young or injured ones.
Other Predators:
* Alligators and Crocodiles: In areas where otters and alligators or crocodiles share habitats, these reptiles can pose a threat.
* Snakes: Some large snakes, like pythons, can prey on otters.
Human Impact:
While not a direct predator, human activities like habitat destruction, pollution, and hunting can significantly impact otter populations.
It's important to note that the specific predators of a particular otter species will vary depending on its geographical location and the ecosystem it inhabits.