Have you ever seen a hippo get its teeth brushed? This video from CGTN Español shows how a zookeeper cleans the teeth of a very cooperative hippo. The friendly hippo keeps its massive mouth open for ...

Few scientific studies had even considered what hippos do when they move quickly on land. There were some observations that, at least at moderate speeds, hippos trotted. So I designed a very simple ...

Hippos are famous for their enormous size, powerful jaws and surprisingly aggressive nature. Yet one of their most extraordinary adaptations has nothing to do with strength. Instead, it lies in a ...