A group of pugs is called a grumble.
10
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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
One litter of kittens can be produced by more than one father.
57
Dolphins have names for one another.
18
When dragonflies mate, their tails form a love heart.
22
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34