QUOTE : In both proto- and modern birds, on the other hand, the skull maintained its youthful shape as the birds matured, leaving plenty of space for enormous eyes and enlarged brains. “When we look at birds,” says Abzhanov, “we are looking at juvenile dinosaurs.” As it happens, we humans may have pulled just such a Peter Pan–like move. As adults, we share the big head, flat face, small jaw, and patchy body hair of baby primates. Paedomorphosis may have enabled us to develop bigger brains, just as it did in birds.