King penguins are the second largest species of penguin and can grow to 3 feet tall. The animals live in Antarctica, which has an estimated population of 2.23 million pairs, and the penguins are well adapted to the extreme living conditions. The birds boast 70 feathers per square inch of their bodies and have four layers of feathering. Like most penguins, king penguins are able to drink saltwater because their supraorbital glands filter out excess salt.
Nils Olav is a king penguin at the Edinburgh Zoo in Scotland who serves as the mascot and colonel-in-chief of the Norwegian Royal Guard. In August 2008, the bird was knighted, an honor approved by the king of Norway.