These male widowbirds are competing to see which of them can jump the highest.
Why do we seem to be intrinsically drawn from an early age to shiny objects ?
Despite being the same species, various breeds of dogs can be very different indeed.
Strongman Kevin Fast and his two sons manage to pull a fire engine over 100ft.
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In 2014, Alan Eustace donned a special spacesuit and jumped from over 135,000 feet.