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
When dragonflies mate, their tails form a love heart.
22
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
There was a cable network called The Puppy Channel that, for 3 years, broadcast only broadcast footage of puppies playing.
1