Dogs, dolphins, parrots, and even octopuses (mere mollusks!) may be smarter than you think.
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How Smart Are Dogs?
Meet an extraordinary Border collie and other dogs that are changing our view of canine intelligence.
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How Smart Are Dolphins?
These brainy marine mammals can "read," plan ahead, and communicate in astounding ways.
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How Smart Is An Octopus?
Hold your fork—octopuses and other mollusks are more intelligent than you may think.
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Profile: Irene Pepperberg
One woman's 30-year relationship with an African gray parrot transformed our understanding of bird intelligence.
