Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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
The desire to squeeze and hug cute things comes from the same place in your brain as aggression.
65
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
When cats are happy, they may squeeze their eyes shut.
10
A puppy is born blind, deaf, and toothless.
16