Dolphins have names for one another.
18
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
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