Video by @zookeeperguyHippos have four canines one in each corner in the front of their mouth. But if you look along here, ...

They're rumoured to kill more humans than lions every year. But that didn't stop a brave zoo keeper at Qingdao Wildlife World in east China's Shandong province practising a bit of dental hygiene on ...

SEATTLE — Water Lily, Woodland Park Zoo's 45-year-old hippopotamus, underwent dental surgery on Wednesday, according to a blog post. The north Seattle zoo said Thursday Lily is "healing well" after ...

For the best experience, please enable JavaScript in your browser settings. Hippos need good dental hygiene too. [Photo: Getty] They're rumoured to kill more humans ...