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Dogs Get Jealous Too

An emotion once thought to be purely human, becoming "green with envy," can also be observed among dogs, according to a researchers at the University of California, San Diego. In their study, dog owners who showed affection towards other subjects, including a toy dog that made noise and wagged its tail, and an inanimate object, elicited what appeared to be jealous behavior from their dogs.    About a third of the 36 dogs tested tried "to break up the connection...

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