Due to the Anna Karenina principle, surprisingly few animals are suitable for domestication. Diamond identifies six criteria including the animal being sufficiently docile, gregarious, willing to breed in captivity and having a social dominance hierarchy. Therefore, none of the many African mammals such as the zebra, antelope, cape buffalo, and African elephant were ever domesticated (although some can be tamed, they are not easily bred in captivity). The Holocene extinction event eliminated many of the megafauna that, had they survived, might have become candidate species, and Diamond argues that the pattern of extinction is more severe on continents where animals that had no prior experience of humans were exposed to humans who already possessed advanced hunting techniques (e.g. the Americas and Australia).
sobre Jared Diamond
