Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
A group of pugs is called a grumble.
10
One litter of kittens can be produced by more than one father.
57
When dragonflies mate, their tails form a love heart.
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