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
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Dolphins have names for one another.
18