Analysis shows hippos get all four feet off the ground simultaneously for up to 15% of the time when running at full speed For a brief moment lasting 0.3 seconds per stride, some hippos 'fly' by ...

85.5 centimetres a second – that’s about 3 kilometres an hour 85 metres a second – that’s about 300 kilometres an hour Camille, 5, asks: what is the fastest wild dog in the world? 1:C - Our best guess ...

John R. Hutchinson does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...