In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
When dragonflies mate, their tails form a love heart.
22
One litter of kittens can be produced by more than one father.
57
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Dolphins have names for one another.
18