Owls are one of the only birds who can see the color blue!
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The cat brain weighs about 30g.
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A 4-foot walrus penis bone sold at auction in 2007 for $8,000.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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A duck's quack doesn't echo, and no one knows why.
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The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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