Deepening restrictions on ivory trafficking have led to an increase of the trade in hippopotamus teeth, wildlife campaigners are warning, with potentially serious effects for a species already ...

Watch as a hippopotamus receives a surprisingly gentle teeth cleaning. The quest begins: find three giant heads, perform a ...

The hippo uses these large teeth for combat, not for hunting. Digital Vision. / Getty Images One of the most striking features of a hippo is its hippo teeth, especially the large canine teeth that ...

This is an image of hippo teeth products for sale in an ivory shop in Sheung Wan, Hong Kong Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!