The Intelligence of Dogs by Dr. Stanley Coren of the University of British Columbia was first published in 1994, and it is still considered the most authoritative source for ranking the cleverness of the world’s dog breeds. Put simply, Dr. Coren classified these 20 types of canine as the smartest on the planet because they proved to comprehend and interpret instructions faster than all the others. So, do you think your favorite breed made the list?
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