english: If we look across many, many different species of animals, not just us primates, but also including other mammals, birds, even marsupials like kangaroos and wombats, it turns out that there's a relationship between how long a childhood a species has and how big their brains are compared to their bodies and how smart and flexible they are.
non_english: Keď sa pozrieme na mnohé a mnohé odlišné druhy zvierat, nielen na primáty, ale tiež ďalšie cicavce, vtáky, dokonca na vačkovce ako sú klokany a vombaty, ukazuje sa, že existuje vzťah medzi tým, aké dlhé detstvo druh má a aké veľké sú ich mozgy v porovnaní k telu, a aké sú múdre a flexibilné.