Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
One litter of kittens can be produced by more than one father.
57
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
A puppy is born blind, deaf, and toothless.
16
Dolphins have names for one another.
18
Some British police cars carry a teddy bear to console children after an accident.
46
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13