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A canny canine

Think your dog is smart? Well, this one is smarter. With a vocabulary of over 1,000 words, Chaser might just be the keenest canine alive. That the six-year-old border collie can identify and categorize 1,022 toys—without the reward of treats—shows that she can understand human language. But can she understand syntax, the order of words in a sentence? This is what Chaser's owner and trainer would like to find out as they continue to study her. Find out more about this top dog at The smartest pooch ever? (www) (American)