The desire to squeeze and hug cute things comes from the same place in your brain as aggression.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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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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A new born kangaroo is small enough to fit in a spoon!
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