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 puppy is born blind, deaf, and toothless.
16
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12