I'm actually not too sure how right you are here, my last cat was a chunky boy at 7kg, let's say that the upper end 68mg is the LD50, I'm roughly 70kg, 680mg of coffee would be very uncomfortable and unpleasant, but I don't think I'd be hitting the LD50.

LD50 in humans is probably around 100mg/kg, fatal doses are 150-200mg/kg

[–] mic_check_one_two@lemmy.dbzer0.com 1 points 3 months ago (2 children)

Yeah, it really doesn’t take much caffeine to kill a person. Plants literally started using it as a pest deterrent.

[–] Uranium_Green@sh.itjust.works 1 points 3 months ago

Roughly about 10g of caffeine for a 70kg human is where it's starts to generally be recognised as lethal

[–] echodot@feddit.uk 0 points 3 months ago

Also mint, and chocolate apparently. And of course chili's. The only one that seems to actually work on us though is nettles.

No one's domesticated them.