Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
A puppy is born blind, deaf, and toothless.
16
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Baby rabbits are called kittens.
6