So why did the Africans never domesticate the rhino? Why did they never farm the hippo? The elephant? Or the giant wildebeest? Perhaps most strangely of all, given the importance of the horse to ...

is the largest physical change to the zoo since it opened in 1961 — were a renovation and expansion of the elephant and hippo habitats. This final phase of the project will include a new indoor ...

All but one of the 27 tools were made from elephant or hippo bone. Hippos were common in the area but elephants were not, meaning their bones were probably carried to Olduvai Gorge from elsewhere ...

the elephant, giraffe, hippopotamus and above all the white rhinoceros. Though much larger than the black rhino, it is harmless; only some 30 individuals remain. Description is available under license ...