When cats are happy, they may squeeze their eyes shut.
10
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
When dragonflies mate, their tails form a love heart.
22