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
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Dolphins have names for one another.
18
When dragonflies mate, their tails form a love heart.
22
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
When cats are happy, they may squeeze their eyes shut.
10
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16