What is the largest living species of penguin?

The story behind the answer

Emperor is correct because the emperor penguin is the largest living penguin species, standing up to about 1.2 meters (4 feet) tall and weighing up to 40 kilograms (88 pounds). It’s notably bigger than the king penguin (second largest) and much larger than Adélie and gentoo penguins.

Emperors are Antarctic specialists: they breed during the brutal winter on sea ice, with males balancing a single egg on their feet under a warm brood pouch for about two months without eating. They survive by huddling in tight groups to conserve heat. Memory tip: E is for Emperor—and for “Enormous.” Remember, kings may wear crowns, but emperors rule in size.