Comment on Would having two hearts be better or worse for the human body?
FuglyDuck@lemmy.world 3 weeks ago
Perfectly healthy? Probably the only real advantage is redundancy, but that comes at the cost of complexity, and on balance, I’d guess that it’s a net negative.
Mostly because I can’t think of any organism that normally has 2 hearts. If there were real advantages, it seems, I dunno. Inevitable?
Bbbbbbbbbbb@lemmy.world 3 weeks ago
Pretty sure giraffes have 2 hearts, I think the brachiosaurus also had 2 hearts too. I have a feeling there was a fish or other ocean creature with multiple hearts and maybe another mammal?
Heres some info I found real quick. No giraffe, several sea creatures, a couple land animals, one dino maybe, and some vague ambiguity.
FuglyDuck@lemmy.world 3 weeks ago
Giraffes are mammals and only have 1 heart. It’s freaking huge, though, at 11 kilos.
octopus and cuddlefish and similar frequently have multiple “hearts” but they’re not the same as mammalian hearts. Briachiosaurus probably had an even larger heart than a giraffe, but it was still a singular, 4 chambered hear.