There was a cable network called The Puppy Channel that, for 3 years, broadcast only broadcast footage of puppies playing.
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When cats are happy, they may squeeze their eyes shut.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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Dolphins have names for one another.
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