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 ...

Hippos are already known as one of the world’s most dangerous animals, but their threat extends far beyond direct attacks.

JOHANNESBURG (AP) — Authorities in Tanzania plan an auction of 3.5 tons of hippo teeth next week, drawing criticism from conservation groups who say the sale could encourage increased killing of the ...

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 ...