The desire to squeeze and hug cute things comes from the same place in your brain as aggression.
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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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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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A group of pugs is called a grumble.
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