Certain stretches of African rivers dry up from time to time, stranding all the water-dependent creatures in a new desert-scape dotted with evaporating ox-bow lakes. During the normal times of plentiful water, hippos and crocs are the masters of the riverine environment. Lions and elephants interface with them at the edges, but pose no challenge to the undisputed lords of the river.
That is, until the water level drops during a severe drought cycle, and the last stagnant ponds dry to cracked mud. Then the crocs and hippos, already starving and dehydrated, must bolt overland to discover another pond or river extension. Few of them moving cross-country in the desert heat live to see another waterhole. Their overland fatality rate is lemming-like, as lions, hyenas and vultures swarm in when they finally drop to the earth.
The moral of the story: Don’t be a hippo if your stretch of river might dry up. Be adaptable to many environments, not just the master of one that might prove to be impermanent. Better yet, be a bird, able to fly away to a safe location as conditions on the ground change for the worse. Have an agile mobility plan—or two or three.
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