When cats are happy, they may squeeze their eyes shut.
10
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.
25
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
22
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13