* Larger sharks: Great white sharks, bronze whalers, and mako sharks are known to prey on Hector dolphins.
* Orcas: These apex predators are a significant threat, particularly in areas where they are present.
* Other dolphins: Larger dolphin species, like common dolphins, may prey on Hector dolphins.
* Seals: Some seals, particularly New Zealand fur seals, have been observed eating Hector dolphins.
It's important to note that Hector dolphins face additional threats from human activities like bycatch in fishing nets and habitat destruction.