Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Dolphins have names for one another.
18
Some British police cars carry a teddy bear to console children after an accident.
46
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
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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