A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
One litter of kittens can be produced by more than one father.
57