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Smelling in Stereo

Dogs have stereoscopic noses, which means they can control each nostril separately.

Cave art discovered in Saudi Arabia dates back thousands of years and possibly shows hunters leading dogs on leashes. Some researchers believe it may be the earliest depiction of dogs ever documented. The dog depicted in the art resembles the modern-day Canaan dog breed.

Helen Keller liked taking her dogs to dog shows.

According to a study by Claudia Fugazza and her colleagues published in Current Biology, dogs may be like humans in that they possess episodic memory, which means they can recall actual experiences.

The game company Activision is fighting a patent for Call of DooDee, a dog poop-removal service started by Albert and Leslie Ochoa of Murrieta.

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