One litter of kittens can be produced by more than one father.
57
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
The desire to squeeze and hug cute things comes from the same place in your brain as aggression.
65