Have you ever wondered that dolphins like Ron are always drooling ?

It is because of their particular mechanism. After evolution. The excess water in their body will be metabolized to get out. That's also why sometimes when Ron does nothing, he will sweat or even drool.

To be able to find if there is an excess of water, every morning, they will lick on a small piece of paper (this paper must be thick), if the paper quickly tears, it means that the excess water is excess and vice versa. Lack of water needs to be replenished.

However, in the absence of that piece of paper, they can try other ways. Every morning, Ron would lick up on the mirror to see if he had a lot of drool. And of course, after he finished, he cleaned it up too