Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
There was a cable network called The Puppy Channel that, for 3 years, broadcast only broadcast footage of puppies playing.
1
One litter of kittens can be produced by more than one father.
57
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Dolphins have names for one another.
18
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