Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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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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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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When dragonflies mate, their tails form a love heart.
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There was a cable network called The Puppy Channel that, for 3 years, broadcast only broadcast footage of puppies playing.
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