Any dog owner has tried on occasion to convince all and sundry what is your pet list, but now also know that some can count to five, they understand more than 150 words and even try to lure humans to their advantage. These are the conclusions of the psychologist and dog expert Stanley Coren research, the University of British Columbia, speaking at the annual meeting of the American Psychological Association to discuss “how dogs think. Coren, author of books about dogs and their behavior, has reviewed numerous studies to conclude that the best friend of man’s ability to solve complex problems and is more similar to men and other great apes than previously thought. Intelligence depends on the breed “Their impressive moments of brilliance and creativity are a reminder that perhaps they are not ‘Einsteins’ but are probably closer to humans than we think,” he said. Coren said, according to various behavioral measures, “the dog’s mental capacities are close to those of a child from two to two and half years. He also assured that intelligence varies with the type of dog and that race determines some of the differences between animals. Thus, explained that there are three types of dog intelligence: instinctive, adaptive (the ability to learn from the environment to solve problems) and working and obedience (the equivalent of “school learning”). Data of 208 dogs in the U.S. and Canada showed that in the “working and obedience intelligence” the border collie is “number one” followed by the poodle and thirdly the German Shepherd. The list of the smartest dogs complete with the golden retriever, the doberman, a shepherd shetland (like the collie) and the farmer, as ranked by Coren. The dog who knew 200 words The expert also said that a normal dog can learn about 165 words, including signs, and more “intelligent”, number 250. Coren said the maximum capacity of learning words based on the study of ‘Rico’, one can learn that showed 200 words spoken and have a high capacity and speed of learning.