The bottom half of a dog with its back paws and curly tail

What Your Dog Is Telling You When It Wags Its Tail

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Bengal cat lies on a bed and looks up with interest

Cats can see UV light, which is invisible to humans.

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Male nightingales advertise their skills as fathers through song.

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New York City subway cars have been dumped into the Atlantic to create artificial reefs.

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Original photo by Jman78/ iStock

Octopuses don’t have tentacles; they have arms.

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Numbat standing on its hind legs

6 Animals You’ll Only Find in Australia 

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