This is the amusing moment a zookeeper demonstrates how a hippo opens his mouth wide to have his tusks filed. Joan, the giraffe and hippo handler, has been carrying out the unique dental care routine ...

The new Neutron rocket includes a "hippo" mouth fairing that deploys upper stages by spitting them out from inside.

Craig and Lisa Manders were on a guided walk in Zambia in June when a hippo charged out of the water, grabbed Lisa Manders by its mouth and crushed her head and body with its bite, according to ...