Hippos shit with a little automatic butt-wiper

of a tail flicking off the poop steadily. Otherwise it’d be drooling down their legs, I guess. I can’t imagine one getting into a crouch. It’d never get back up. Natural selection never rests. If it’s difficult to envision the transition of land mammals to sea mammals, one only has to look at the hippo to see the transition, overweight and water-logged, gliding through the water, bouncing on all fours, incapable of swimming. They’ll learn. You watch them fight with their mouths and compare to the methods of some of the sea cows currently extant and you realize that this is something not likely to happen, but something that has already happened, though still in progress. Some of the different varieties of current sea mammals might as likely have resulted from different waves of evolution from the same branch stock rather than evolution of unrelated stocks, evolution differentiated by time as well as space.

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