This is half of a human brain. >> This is This is half a human brain. >> That's a dog brain. >> That's the dog brain.>> Half a brain. Wow. >> Dr.. Keane showed us how similar dogs brains are to humans. >> You can see the the dog brain has the same frontal lobe, temporal lobe, occipital lobe, >> the same basic shape as the human brain, just >> very, very similar. >> And it turns out dementia changes brain size and structure in very similar ways in both species.>> This is a person in their 80s who was not dem ...