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
One litter of kittens can be produced by more than one father.
57
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
22