An ancient relative of the hippopotamus likely swam from Asia to Africa some 35 million years ago.
An ancestral study of the hippo reveals that a wide variety of animals share distant relations with the mammal.
Not all stars walk on two legs -- or even have legs. This Oscar season, we take a look at some famous animals that made their mark in film and television.
Mass beachings of whales look like a collective suicide pact come to fruition among the giant creatures of the sea. But science has a few more realistic, less self-destructive ideas about why they may head for shore.
A new film captures the beauty of these massive mammals -- and the difficulty in filming them.
A killer whale in a Miami aquarium that has spent more than four decades in a tank will be granted the same protected status as her wild relatives.
Skulls of at least some baleen whales have acoustic properties that capture the energy of low frequencies and direct it to their ear bones.
A paddle boarder went out in search of an encounter with orcas and got his wish when a peaceful pod interacted with him.
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