In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
A group of kittens is called a "kindle".
10
Sea otters hold hands while sleeping so they don’t drift away from each other.
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Some British police cars carry a teddy bear to console children after an accident.
46
One litter of kittens can be produced by more than one father.
57