Sea otters hold hands while sleeping so they don’t drift away from each other.
104
A new born kangaroo is small enough to fit in a spoon!
7
One litter of kittens can be produced by more than one father.
57
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
A puppy is born blind, deaf, and toothless.
16
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13