When cats are happy, they may squeeze their eyes shut.
10
One litter of kittens can be produced by more than one father.
57
A group of pugs is called a grumble.
10
A group of kittens is called a "kindle".
10
Dolphins have names for one another.
18
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13