Dolphins have names for one another.
18
When cats are happy, they may squeeze their eyes shut.
10
Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
22
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
When dragonflies mate, their tails form a love heart.
22