Why were there far more species of domesticated animals in Eurasia than in the Americas? The Americas harbor over a thousand native wild mammal species, so you might initially suppose that the Americas offered plenty of starting material for domestication. — Jared Diamond Copy Share Image
“Researches still don't have an explanation for the differnece between the sizes of dogs' and wolves' brains - or for why every species of domesticated animal, from ducks and geese to horses and pigs, also has a smaller brain than… — Virginia Morell Copy Share Image
