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
A puppy is born blind, deaf, and toothless.
16
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
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13