Our dogs' diversity can be traced back to the Stone Age

The most successful land-based hunters are variants of dogs and cats [1]. (House cats remain in the top ten.)

Humans broke the game by allying with or exterminating other apex predators. I don’t believe another double-apex alliance is seen anywhere else, in our biosphere or in the fossil record.

[1] https://en.wikipedia.org/wiki/Hunting_success

No, we broke the game by domestication, where we simplified hunting to walking the animal into the slaughterhouse. Mammalian wildlife is < 5% of mammalian biomass on earth, with humans being around 30% and domesticated animals being around 60% [1].

For example, there are around 30 billion chickens in the world, butchered within 6-8 weeks. Repeat.

Domestication was partly the result of not eliminating apex predators. A shepherd would guard a flock of sheep, and farmers would historically live/sleep near/with the animals, to protect them day and night.

[1] https://wildlife.org/on-a-global-scale-livestock-outweighs-w...