When cats are happy, they may squeeze their eyes shut.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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A group of pugs is called a grumble.
10
When dragonflies mate, their tails form a love heart.
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Baby rabbits are called kittens.
6
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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