Though you might not be able to tell from their plump bellies and adorable waddles, penguins do, in fact, have knees! They have the same leg bones as most other bipedal vertebrates, but certain adaptations have made walking a bit harder...
Though you might not be able to tell from their plump bellies and adorable waddles, penguins do, in fact, have knees! They have the same leg bones as most other bipedal...