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They can look at their brain activity. >> why is that important? >> when theyre sedated you wouldnt be able know what the brain is doing. so the fact theyre conscious lets us really know they did in fact have positive responses to the sounds of people laughing, and they also had positive responses to doings do things like play barking. >> what is interesting, too, i was tweeting this. some people have said that dog is mans best friend. are they better capable at reading our emotions than somebod...