Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Some British police cars carry a teddy bear to console children after an accident.
46
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
When dragonflies mate, their tails form a love heart.
22
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
One litter of kittens can be produced by more than one father.
57
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16