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Cats can drink salt water
(lemmy.world)
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this post was submitted on 21 Jun 2025
105 points (98.2% liked)
Mildly Interesting
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I could say that is an impressive evolutionary feat, but instead I'll say: Evolution, what the hell is wrong with you? You do know we all came from the sea, you should know 70% of the earth is covered in salt water, why did you think it was ok to devolve the ability to drink salt water but retain the requirement to drink water? Are you Ok? Do you need Jesus?
Evolution is considered a success if the animal lives long enough to successfully mate and nothing else matters to mindless evolution. At least cats don't have curly tusks that borrow through the skull if they live long enough like that infamous boar species I can't remember the name of.
kidney disease is one of the most common ways cats die of old age so super efficient kidneys dont come without a tradeoff. Cats have evolved to live in very arid enviorments where saltwater is all that is availible so the tradeoff might have been worth it. ability to drink saltwater only would work without kidneys being prematurely overstressed would be likely if animals had higher normal salt content but that would mean they would need a lot higher salt intake making living inland harder.
IDK man, whales can live over 200 years.
but whales like all sea creatures have high bodry salt content making the osmotic pressure difference small
Ok, so here's an Idea, have more salt in our fluids.
Great idea except we'd need another million years of evolution or more
irradiated reproductive cells go brrr
No, you're missing the point again, when fish first went land diving they drank salt water because of that there body would have already had more salt and so would there kidneys, we evolved the ability to drink fresh water, that is what took a million years.
I didn't comment elsewhere but from this incoherent comment it's clear you don't have the first clue what you're on about, or why I said a million years (evolving a major change like sea to land takes hundreds of millions or billions of years).
Ideas are good, but people contributing ideas that show they don't know anything at all about the topic, while insisting they're right, gets tiresome.
Or maybe you're still missing the point...