When cats are happy, they may squeeze their eyes shut.
10
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
One litter of kittens can be produced by more than one father.
57
A group of pugs is called a grumble.
10