Hippos' huge tusks and wide gape restrict grinding jaw movements, making their chewing inefficient, according to a new study. Hippos' huge tusks and wide gape restrict grinding jaw movements, making ...

Whether it’s gum, tobacco or a piece of steak, every one of us chews something. As outlandish as it may sound, researchers in Canada have used technology to turn mastication – and other movements of ...

The slight side-to-side chewing movements used by living hippos suggest that the ancestors of both modern species relied more extensively on grinding jaw movements. Why modern hippos lost this ability ...