記憶，推理，狡詐和同情. memory, reasoning, cunning and empathy

How clever is YOUR dog? Website uses games to test the intelligence and even personality type of man's best friend | Mail Online
http://www.dailymail.co.uk/sciencetech/article-2439934/How-clever-YOUR-dog-Website-uses-games-test-intelligence-personality-type-mans-best-friend.html

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