Penguins are not known for their walking ability.
They tend not to be particularly graceful on land.
So you'd be forgiven for thinking their legs are just little stumpy things.
But it turns out they do in fact have knees.
Not that you would know it from looking at them waddle.
Exhibit A:
Exhibit B:
They make up for all the waddling by being complete naturals in the water.
And it looks like those knees come in pretty handy when you just can't be bothered to walk any more, too.
