[SunkenCiv]

Partial jaw of a large, extinct jaguar discovered in a cave in the Ultima Esperanza region of Patagonia. [Credit: Fabiana Martin/CEHA]

[Snickering Hound]

https://en.wikipedia.org/wiki/Mammoth_steppe

Cro-magnon and their SUV’s warmed the planet so much that they completely wiped out the megafauna’s biome.

[Menehune56]

I guess there’s nothing to be done but extinct ourselves.

[exDemMom]

Perhaps the megafauna could not shed body heat efficiently in the warming temperatures and died off.

[Rebelbase]