40. Why Are Dolphins So Heroic?
Many theories exist in an attempt to explain the heroism and altruism of dolphins, especially that they show towards other species. Some scientists think that they expect a reward of food, such as if they save people in a fishing boat.
The Independent
Other think that, as a result of their amazing sense of echolocation, they can listen to other mammals’ heartbeats and detect stress. They always try to help out their fellow dolphins as well.