Dreaming is an act of pure imagination attesting in all men a creative power which if it were available in waking would make every man a Dante or Shakespeare.
Hope is the struggle of the soul breaking loose from what is perishable and attesting her eternity.
I think that animals aren't less intelligent than humans they're just of a different intelligence. We have five million smell-sensitive cells in our nose they have two hundred and fifty million - they can smell emotion. They can smell different types of emotion they just have another type of intelligence.