Classement des races de chiens par intelligence (le Border Collie est le chien le plus intelligent, suivi par le caniche et le berger allemand).
Un facteur g d’intelligence générale (g factor) chez le chien a pu être mis en évidence.
Intelligence, Volume 55, March–April 2016, Pages 79–85.
-The structure of cognitive abilities in dogs is similar to that found in people.
-Dogs that solved problems more quickly were also more accurate.
-Dogs’ cognitive abilities can be tested quickly, like those of people.
-Bigger individual differences studies on dog cognition will contribute to cognitive epidemiology.
Brightest Dogs
Understanding of New Commands: Less than 5 repetitions.
Obey First Command: 95% of the time or better.
| Rank | Breed |
| 1 | Border Collie |
| 2 | Poodle |
| 3 | German Shepherd |
| 4 | Golden Retriever |
| 5 | Doberman Pinscher |
| 6 | Shetland Sheepdog |
| 7 | Labrador Retriever |
| 8 | Papillon |
| 9 | Rottweiler |
| 10 | Australian Cattle Dog |
Excellent Working Dogs
Understanding of New Commands: 5 to 15 repetitions.
Obey First Command: 85% of the time or better.
Above Average Working Dogs
Understanding of New Commands: 15 to 25 repetitions.
Obey First Command: 70% of the time or better.
Average Working/Obedience Intelligence
Understanding of New Commands: 25 to 40 repetitions.
Obey First Command: 50% of the time or better.
Fair Working/Obedience Intelligence
Understanding of New Commands: 40 to 80 repetitions.
Obey First Command: 30% of the time or better.
Lowest Degree of Working/Obedience Intelligence
Understanding of New Commands: 80 to 100 repetitions or more.
Obey First Command: 25% of the time or worse.
| Rank | Breed |
| 70 | Shih Tzu |
| 71 | Basset Hound |
| 72 | Mastiff Beagle |
| 73 | Pekingese |
| 74 | Bloodhound |
| 75 | Borzoi |
| 76 | Chow Chow |
| 77 | Bulldog |
| 78 | Basenji |
| 79 | Afghan Hound |