When dragonflies mate, their tails form a love heart.
22
When cats are happy, they may squeeze their eyes shut.
10
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Baby rabbits are called kittens.
6