Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Raj from the Big Bang Theory is married to Miss India.
11
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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 cats are happy, they may squeeze their eyes shut.
10