00:00in nature generally the larger the brain the smarter the creature well now new
00:08research suggests that the brains of domestic dogs are getting larger but
00:12scientists are sort of baffled as to why domestication has long been a mechanism
00:16for smaller brains and animals and sort of humans as well over the last three
00:19millennia anthropologists say human brains have shrunk in volume and
00:23compared to wolves dog relative brain size is smaller as well but now a new
00:27study published in the journal evolution outlines how the more different the
00:30dog breed is from a wolf now the larger the brain experts believe that when dogs
00:34were first domesticated their brains shrunk as they no longer needed as much
00:37bandwidth as they could rely on their human best friends but now as breeding
00:41has caused forced evolution over the last several thousand years their
00:44cognitive abilities are likely getting better meaning their brains are growing
00:48with evolutionary biologist nicholas calm saying about the findings quote
00:51different dog breeds live in varying levels of social complexity and perform
00:55complex tasks which likely require a larger brain capacity though the
00:59researchers found that the only correlation of brain growth was how
01:02dissimilar the breeds were to wolves rather than their actual cognitive
01:06abilities
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