I bet you came here looking for a super cute picture of a sleepy penguin chick.  Busted!  Well check out this freaky factoid in photo form:  Adelie penguin tongues have spikes.  SPIKES!  Creepy little dino-beaks with spiky tongues.

(click on the photo to enlarge it)

If you must know, their tongues have spikes to better catch and devour krill.