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 ...

Chewing, in particular, is an important link between the mouth and the mind. Chewing can improve cognitive ability and is beneficial to memory, because it activates the somatosensory cortex, the ...

Speaking, singing, coughing, laughing, yelling, yawning, chewing—we use our jaws for many purposes. Each action requires a complex coordination of muscles whose activity is managed by neurons in the ...

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 ...