Instead, sometimes it is the smaller or unexpected animals. That was the case when this cornered rockhopper penguin defended itself and its young against a massive sea lion. Watch as this brave ...

In PEOPLE's sneak peek at the three-part show, premiering April 20 on National Geographic, a mother rockhopper penguin faces a giant beast to ensure the safety of her offspring. The clip begins ...

In a remarkable display of maternal courage, a rockhopper penguin was caught on camera defending her chicks against a massive sea lion near the Falkland Islands. Narrated by Blake Lively ...

You might think the answer to ‘how many species of penguins are there’ would be simple… but its not. In fact, you may well have just stumbled into the most contentious issue in the world of ...