Dolphins have names for one another.
18
One litter of kittens can be produced by more than one father.
57
A group of pugs is called a grumble.
10
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
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12