If youâve got a canine friend, you may ascribe to the belief that your dog feels happy when you come home, depressed when you leave, or sympathetic when youâre feeling down. Well, you may be right. Recent science suggests that dogs may be prone to optimistic and pessimistic tendencies, and researchers used principles from human psychology to test this hypothesis. In the words of dozens of like-minded news writers, for some dogs âthe bowl is half-empty.ââ¦
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