Is the Upside Down Rhino a Good Life Choice?

In a million years, the rhinos will all move around upside downye. This is optimal rhinoceros here. Don't some people have contraptions for flipping themselves upside down? I feel like this is probably something we'd have to come back to in a full episode. But they at least know that in this small group of animals, hanging upside down was no worse for breathing than lying sideways on a sledge and it might possibly improve oxygen saturation a little bit. That seems to be the case.