If you're a dog owner, this question may have crossed your mind. Does she really love me, or is she just looking at me that way to get a treat? New research out this week in the journal Science may provide some clues. NPR's Geoff Brumfiel has this report on puppy love.
GEOFF BRUMFIEL, BYLINE: Just up the street from NPR's headquarters, I found Myrna Charles walking her Great Danes.