In the book Busy Penguins, the authors have a photo that they have captioned incorrectly:

The authors of the book are apparently unfamiliar with the penguin martial art spheniscinatasu. Instead of putting a wing around the other penguin to comfort his compatriot, the penguin on the right is in the process of employing the dreaded aptenodytesu forsterika death strike, a move that crushes the opponent’s arteries to the head and leads to death within agonizing seconds.
Penguins caring, indeed.