Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Some British police cars carry a teddy bear to console children after an accident.
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A group of kittens is called a "kindle".
10
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Dolphins have names for one another.
18
When cats are happy, they may squeeze their eyes shut.
10
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81