When cats are happy, they may squeeze their eyes shut.
10
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 group of kittens is called a "kindle".
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
When dragonflies mate, their tails form a love heart.
22
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10