One litter of kittens can be produced by more than one father.
57
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
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10
Raj from the Big Bang Theory is married to Miss India.
11
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13