The intelligence of dogs is similar to that of humans, either congenital, influenced by genes, or developed later in life, with the addition of training. A Canadian psychologist ranked the IQ of dogs and the top 10 IQs are: Border Collie, Poodle, German Shepherd, Golden Retriever, Doberman Pinscher, Pleasant Shepherd, Labrador Retriever, Butterfly Dog, Rottweiler and Australian Cattle Dog.
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