The researchers suspect that the newborn c-section babies might be picking up their generic bacteria mix from the air - one way bacteria gets on our skin.
VOA: standard.2010.06.30
Binge-eating disorder, hoarding disorder, and excoriation (skin-picking) will also now be legitimate disorders with which one can be diagnosed.
Unlike apes which spend much of their time picking dirt and lice off their skin and fur, elephant preening is more about rolling in mud than removing it.
"The animals are actually developing color on the skin and they're doing it without pigments, and they potentially have the chance to be picking a certain color, " Wardill said.