Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
When dragonflies mate, their tails form a love heart.
22
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
A group of kittens is called a "kindle".
10
Baby rabbits are called kittens.
6
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11