Douglas Adams. Mostly harmless (№ 195175)

It's one thing to be the life form that, like practicum, finds the most comfortable temperature in the range from 40,000 to 40.004, but quite another thing to belong to that species, passing their planet one point of the orbit is forced to wrap up in the skins of other species, so that later, during the passage of the planet another point of the orbit, to find that they are in their own skin hot.