A penguin's leg is composed of a short femur, knee, tibia and fibula. The upper leg bones are not visible as they are covered in feathers giving penguins a very short legged appearance.

What do you call penguins legs?

A Penguin Does Have Wings, But They Are Called Flippers. ... Much the way ocean mammals such as whales and dolphins have evolved leg-like appendages into swimming flippers, so too have penguin wings evolved into flippers to facilitate swimming.

Do penguins have 4 legs?

In fact, a penguin's leg is made up of four parts: a femur, knee, tibia, and fibula — the same bones you have in your leg! Why do their legs look so short then? It's a bit of an optical illusion, because a penguin's upper legs are hidden by their feathers. So penguins do have knees.