Ever feel like your dog was jealous when you played with another pooch, Today asks? It might not have been your imagination, according to a new study.
The object of jealousy: a stuffed dog that barked and wagged its tail. Researchers compared how dogs reacted to their owners petting the faux canine with how they reacted to them showering love on a jack-o-lantern pail and reading a noise-making pop-up book aloud.
Dr. Christine Harris, an emotion researcher at UC San Diego, got the idea for the study after playing with her parents' three border collies.
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