Mongolia: A herd of endangered Przewalski horses trot across the Takhin Us national park. Prague zoo, in the Czech Republic, transported four of the horses to Mongolia as part of its efforts to reintroduce the endangered species into its native environment

Photograph: Petr Josek/Ruters

HH:  These horses always look like the horses painted on caves from prehistoric times to me.  I adore them.  They are like the Dingos of the Horse World.