If you really want to see “jaws,” forget about great white sharks. Instead, look for the sarcastic fringehead. It’s a little fish -- no more than a foot long. But the male fringehead can spread his jaws wider than the length of his body. And it’s not just for show. He’ll attack just about anything that enters his territory.
The sarcastic fringehead gets its name from its behavior and its appearance -- it’s aggressive and fearless, and it has little filaments above its eyes that look like fringe.
It’s the question every parent fears: Who is your favorite child? In the case of Magellanic penguins—if their chicks could ask—the answer is the most egalitarian: both of them! Many animals with multiple offspring make tough choices about distributing resources to their brood. Many runts don’t survive because they can’t compete or because their parent must favor those offspring that are most likely to survive and thrive.
