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As the water dries out in the Okavango River, many hippo pods are forced together in tightly packed pools. Pressure mounts as pelicans, eagles and even crocodiles enter the mix… Subscribe: http://bit.ly/BBCEarthSub [#NaturalWorld #BBCEarth Watch more: Planet Earth http://bit.ly/PlanetEarthPlaylist Blue Planet http://bit.ly/BluePlanetPlaylist Planet Earth II http://bit.ly/PlanetEarthIIPlaylist Planet Dinosaur https://bit.ly/PlanetDinosaurPlaylist Natural World: Hippos – Africa’s River Giants David Attenborough reveals the life of the hippopotamus as…