Let’s take a look and learn about hippo mouths: their size and facts. What Does a Hippo’s Mouth Look Like? As one of the largest in the animal kingdom, it’s no wonder that their mouths are ...

The ability to open so wide is allowed by a rear-located jaw and a folding orbicularis oris muscle that can fold open and closed when needed. Hippo skulls are massive, reflecting the animal that they ...

Your orbicularis oris is sometimes known as the kissing muscle. It is a circular muscle that closes your mouth and puckers your lips when it contracts. Back to top. Human body homepage ...