I personally recently learned that our human ancestors would follow flocks of vultures and then they would help them to identify where carcasses have been dropped by large carnivores, and these humans will scavenge and eat part of that meat.
Recentemente aprendi que nossos ancestrais seguiam bandos de abutres que os ajudavam a identificar onde havia carcaças deixadas para trás por grandes carnívoros, e esses humanos recolhiam e comiam parte dessa carne.