What eats a river dolphin?

River dolphins, being apex predators in their freshwater ecosystems, don't typically have any natural predators.

However, there are some instances where:

* Larger fish like catfish or piranhas might prey on young, sick, or injured river dolphins.

* Crocodiles in certain areas might pose a threat, especially to calves.

* Humans are the biggest threat to river dolphins due to habitat loss, pollution, and accidental entanglement in fishing gear.

It's important to remember that river dolphins are highly adapted to their environment and have evolved to avoid predation. They are agile swimmers and use echolocation to navigate and hunt, making them difficult targets for most predators.