Less pleasure when given a treat without having to work for it
Dogs have the intelligence of a 2-year-old child. So, we should not be surprised at the study reported by Natural News. They claim that, just like humans, dogs gain pleasure from solving difficult problems.
The Swedish study used measurable results such as vigorous tail wagging. They gained more pleasure when given a treat after solving a difficult problem. That contrasts with the less tail wagging when given a treat without first solving a problem.
Read about the study in the Natural News.
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